How to Install Patrol Car Emergency Lights
Patrol cars benefit from compact, lightweight lights. LED (light emitting diode) technology provides cost savings over halogen, since the bulbs don't need to be replaced. The lights are small, quiet and supply more light-power than older halogen rotating beacons and strobe solutions. Clear lightheads mean the lights can be less conspicuous, too. One of the simplest and most economical locations for patrol car emergency lights is on the rear deck straddling the third brake light. The location is weatherproof and highly visible when the emergency lights are illuminated.
Instructions
1
Remove the rear seat and pry the brake light off the rear deck with a flat-head screwdriver. Disconnect the brake light wire by pulling it off with a set of pliers. Remove the fasteners that secure the deck and remove it.
2
Position the patrol car emergency light bracket behind the brake light 1/8-inch from the indentation left by the third brake light.
3.Run a red positive wire from the fuse block to the rear deck and fuse it with an appropriate fuse -- many lights use 5 Amps. Run a black, negative wire to the rear deck. Add a switch halfway along adjacent to the driving position.
4
Drill mounting holes into the deck with a 9/32-inch bit. Drill a hole for the wires with a 1/2-inch bit and secure the bracket to the deck with the included hardware. Then re-install the deck and the third brake light, reconnecting it. Feed the emergency lights wires through to the switched power source. Clip the emergency light to the bracket and re-install the patrol car rear seat.
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2014年11月27日星期四
How to Design an LED/IR Lamp Flasher Circuit
How to Design an LED/IR Lamp Flasher Circuit
(Reference 1) You can easily put an LED flasher together with a 555 integrated circuit (IC) timer and a few outboard parts. You can choose any color LED, including the infrared (IR) varieties. The 555 is a versatile timing pulse generator, producing variable-width pulses. On its own, it provides up to 600 milliwatts of drive power---perfect for small-to-medium LED flasher projects. The 555's low cost and simple connections means you can build this project inexpensively in under an hour.
Instructions
1
Examine the 555 timer's data sheet, especially the application notes for astable operation. A timing network of 2 resistors and a capacitor determine the 555's frequency and duty cycle. The duty cycle is the percentage of time the timer spends in the "on" state at each cycle. This isn't usually a critical value for a flasher project, though you'll probably avoid very small or large percentages.
2
Determine a flash speed for your project. Most LED flashers work at about 1 cycle per second, but the 555 can run anywhere from minutes per cycle to several thousands of cycles per second. Select a capacitor 10 microfarads, for example. Calculate resistances for the two resistors, Ra and Rb using the following formula:
F = 1.44 / (C x (Ra + 2Rb))
Where F is frequency in hertz, C is the capacitor's value in farads, and Ra and Rb are the ohm values for two resistors. If you want a frequency of 1 Hz, and using 10 microfarads for C, gives you a total of 144,000 for Ra + 2Rb. You can satisfy this by setting Ra = 100K ohms and Rb = 22K ohms.
3.Insert the 555 timer into the prototype breadboard. Work the chip in slowly and make sure the pins go straight into the holes. With the battery disconnected from the battery clip, wire the 9-volt battery clip into the breadboard so that the positive (red) lead goes to pin 8 of the 555 IC and the negative (black) lead goes to pin 1.
4
Insert the capacitor into the breadboard. If it's an electrolytic capacitor, insert the negative lead so it connects to pin 1 of the IC. The positive lead goes to pin 6. Insert a jumper wire to connect pins 4 and 8 together. Insert another jumper wire to connect pins 2 and 6. Insert the 100K ohm resistor Ra so that one lead connects to pin 8 and the other lead goes to pin 7. Insert the 22K ohm resistor Rb so that one lead connects to pin 7 of the 555 and the other lead connects to pin 6. Insert the LED into the breadboard so that its anode connects to pin 3 of the 555 and the cathode connects to one lead of a 150 ohm resistor. Connect the other resistor lead to pin 1 of the 555.
5
Double-check your connections, then connect the 9-volt battery to the clip. The LED should start flashing immediately.
Tips & Warnings
Experiment with different values of Ra, Rb, and the capacitor to alter the flasher's speed and duty cycle.
If you want to drive a string of LEDs, or use high-brightness LEDs, you may need to add a transistor to the 555's output at pin 3. The transistor's higher current rating will handle the increased load.
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(Reference 1) You can easily put an LED flasher together with a 555 integrated circuit (IC) timer and a few outboard parts. You can choose any color LED, including the infrared (IR) varieties. The 555 is a versatile timing pulse generator, producing variable-width pulses. On its own, it provides up to 600 milliwatts of drive power---perfect for small-to-medium LED flasher projects. The 555's low cost and simple connections means you can build this project inexpensively in under an hour.
Instructions
1
Examine the 555 timer's data sheet, especially the application notes for astable operation. A timing network of 2 resistors and a capacitor determine the 555's frequency and duty cycle. The duty cycle is the percentage of time the timer spends in the "on" state at each cycle. This isn't usually a critical value for a flasher project, though you'll probably avoid very small or large percentages.
2
Determine a flash speed for your project. Most LED flashers work at about 1 cycle per second, but the 555 can run anywhere from minutes per cycle to several thousands of cycles per second. Select a capacitor 10 microfarads, for example. Calculate resistances for the two resistors, Ra and Rb using the following formula:
F = 1.44 / (C x (Ra + 2Rb))
Where F is frequency in hertz, C is the capacitor's value in farads, and Ra and Rb are the ohm values for two resistors. If you want a frequency of 1 Hz, and using 10 microfarads for C, gives you a total of 144,000 for Ra + 2Rb. You can satisfy this by setting Ra = 100K ohms and Rb = 22K ohms.
3.Insert the 555 timer into the prototype breadboard. Work the chip in slowly and make sure the pins go straight into the holes. With the battery disconnected from the battery clip, wire the 9-volt battery clip into the breadboard so that the positive (red) lead goes to pin 8 of the 555 IC and the negative (black) lead goes to pin 1.
4
Insert the capacitor into the breadboard. If it's an electrolytic capacitor, insert the negative lead so it connects to pin 1 of the IC. The positive lead goes to pin 6. Insert a jumper wire to connect pins 4 and 8 together. Insert another jumper wire to connect pins 2 and 6. Insert the 100K ohm resistor Ra so that one lead connects to pin 8 and the other lead goes to pin 7. Insert the 22K ohm resistor Rb so that one lead connects to pin 7 of the 555 and the other lead connects to pin 6. Insert the LED into the breadboard so that its anode connects to pin 3 of the 555 and the cathode connects to one lead of a 150 ohm resistor. Connect the other resistor lead to pin 1 of the 555.
5
Double-check your connections, then connect the 9-volt battery to the clip. The LED should start flashing immediately.
Tips & Warnings
Experiment with different values of Ra, Rb, and the capacitor to alter the flasher's speed and duty cycle.
If you want to drive a string of LEDs, or use high-brightness LEDs, you may need to add a transistor to the 555's output at pin 3. The transistor's higher current rating will handle the increased load.
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How to Fix a Rope Light
How to Fix a Rope Light
During the holidays, many people hang decorative, festive lights on a tree or around the perimeter of their property. These are also known as rope lights. Because they are used on an annual basis and are occasionally hung outside, during some of the worst winter weather, rope lights can run into problems. You can repair them with a few tools and troubleshooting skills.
Instructions
1
Remove the rope lights from the Christmas tree or wherever they are hanging. If they are hanging on a wall by brackets, use a screwdriver to unfasten the brackets. If they are held up by wire, use a wire stripper to cut the wire. Remove the broken wire piece first. Lay everything on a table or workbench after removing it.
2
Examine the insulating material from the broken edge of the rope lights. Check the wire beneath it as well. Secure the edges of the wire together using a soldering iron to reconnect it. Let it cool for several minutes afterward.
Affix insulating material or insulation tubes over the tops of the exposed wires in the rope lights. If using insulation tubes from a radio car hobby shop, add these items prior to the soldering. Melt the wires to the material using a crimping iron, if using insulating material.
4
Remove the bulbs from the rope lights. Plug the lights back in to check whether they work.
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During the holidays, many people hang decorative, festive lights on a tree or around the perimeter of their property. These are also known as rope lights. Because they are used on an annual basis and are occasionally hung outside, during some of the worst winter weather, rope lights can run into problems. You can repair them with a few tools and troubleshooting skills.
Instructions
1
Remove the rope lights from the Christmas tree or wherever they are hanging. If they are hanging on a wall by brackets, use a screwdriver to unfasten the brackets. If they are held up by wire, use a wire stripper to cut the wire. Remove the broken wire piece first. Lay everything on a table or workbench after removing it.
2
Examine the insulating material from the broken edge of the rope lights. Check the wire beneath it as well. Secure the edges of the wire together using a soldering iron to reconnect it. Let it cool for several minutes afterward.
Affix insulating material or insulation tubes over the tops of the exposed wires in the rope lights. If using insulation tubes from a radio car hobby shop, add these items prior to the soldering. Melt the wires to the material using a crimping iron, if using insulating material.
4
Remove the bulbs from the rope lights. Plug the lights back in to check whether they work.
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here Do I Find Grow Lights for Indoor Plants?
Where Do I Find Grow Lights for Indoor Plants?
Grow lights are indoor lighting sources or systems that come in a variety of sizes and designs and are used to grow plants indoors. The University of Missouri Extension recommends using fluorescent tubes, but some retailers also offer LED systems. Grow lights are easy to find at a wide variety of retailers. Prices are as of 2010.
Home Improvement Stores
Home improvement stores, such as Lowe's and Home Depot, typically have large gardening departments. Both offer simple reflector bulbs for grow lights for less than $10.
Walmart
Walmart sells the Rion Greenhouses Super Fast Grow Light, an LED light source that promises to make your plants and vegetables grow faster. It sells for $159.99 and can be used indoors or outdoors.
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Grow lights are indoor lighting sources or systems that come in a variety of sizes and designs and are used to grow plants indoors. The University of Missouri Extension recommends using fluorescent tubes, but some retailers also offer LED systems. Grow lights are easy to find at a wide variety of retailers. Prices are as of 2010.
Home Improvement Stores
Home improvement stores, such as Lowe's and Home Depot, typically have large gardening departments. Both offer simple reflector bulbs for grow lights for less than $10.
Walmart
Walmart sells the Rion Greenhouses Super Fast Grow Light, an LED light source that promises to make your plants and vegetables grow faster. It sells for $159.99 and can be used indoors or outdoors.
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How to Wire an LED Rocker Switch
How to Wire an LED Rocker Switch
LED Rocker switches use a built-in LED to provide a clear indication that the switch is turned on, and are usually used for switching 12 volts DC. Single pole, single throw, or SPST, switches normally have two connections, one for the power going to the switch, and the other for the power leaving the switch to power the load when the switch is turned on. LED Rocker switches also have a third connection, which is needed to provide a ground connection for the LED.
Instructions
1
Cut two lengths of red wire to use for the power connections on the switch, and one piece of black wire to provide the ground connection for the switch. Strip approximately 1/4 inch of insulation from the ends of each of the wires, using the utility knife or wire strippers.
2
Take each wire in turn, and twist the wire strands at the end of the wire together to make a solid connection. Slide a crimp terminal onto the end of each piece of wire, and then crimp in place using a crimping tool. The type of crimp terminal should match the type of connectors on the switch, so they fit together properly and provide a good connection.
3.Slide the crimp terminal on the end of one of the red wires over the lug on the switch labelled "Acc". Connect the other end of this wire to the power input of the device being switched.
4
Slide the crimp terminal at the end of the other red wire on to the switch lug labelled "Power." The other end of this wire should be connected to the positive connection of the twelve volt power source, for example a twelve volt battery.
5
Take the black wire, and slide the terminal over the lug on the switch labelled "Ground." The other end of this wire should be connected to the negative connection of the twelve volt power source, to provide the ground connection for the LED.
6
Connect the ground connection of the device being switched to the negative connection of the power source. You can now test the circuit. When the switch is turned on, the LED in the switch should light and the connected device will be powered.
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LED Rocker switches use a built-in LED to provide a clear indication that the switch is turned on, and are usually used for switching 12 volts DC. Single pole, single throw, or SPST, switches normally have two connections, one for the power going to the switch, and the other for the power leaving the switch to power the load when the switch is turned on. LED Rocker switches also have a third connection, which is needed to provide a ground connection for the LED.
Instructions
1
Cut two lengths of red wire to use for the power connections on the switch, and one piece of black wire to provide the ground connection for the switch. Strip approximately 1/4 inch of insulation from the ends of each of the wires, using the utility knife or wire strippers.
2
Take each wire in turn, and twist the wire strands at the end of the wire together to make a solid connection. Slide a crimp terminal onto the end of each piece of wire, and then crimp in place using a crimping tool. The type of crimp terminal should match the type of connectors on the switch, so they fit together properly and provide a good connection.
3.Slide the crimp terminal on the end of one of the red wires over the lug on the switch labelled "Acc". Connect the other end of this wire to the power input of the device being switched.
4
Slide the crimp terminal at the end of the other red wire on to the switch lug labelled "Power." The other end of this wire should be connected to the positive connection of the twelve volt power source, for example a twelve volt battery.
5
Take the black wire, and slide the terminal over the lug on the switch labelled "Ground." The other end of this wire should be connected to the negative connection of the twelve volt power source, to provide the ground connection for the LED.
6
Connect the ground connection of the device being switched to the negative connection of the power source. You can now test the circuit. When the switch is turned on, the LED in the switch should light and the connected device will be powered.
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2014年9月10日星期三
How to Change the Message Light Color on a BlackBerry Bold
How to Change the Message Light Color on a BlackBerry Bold
The BlackBerry Bold smartphone features a LED light that flashes when you receive a call or message or when an alarm goes off. The default setting on the Bold triggers a red light when you receive messages. A number of BlackBerry applications allow you to choose from several different LED colors and assign them to your contacts. As a result, you do not need to open a message to see who it is from.
Instructions
1
Access the Sounds menu on your Bold. Select Edit Profiles. Make sure that the LED option reads "On" within the email, SMS and MMS menus for each of your sound profiles. If it reads "Off," the phone will not display an LED alert when you receive messages.
2
Navigate to Appworld.BlackBerry.com. Download a BlackBerry application for customizing the phone's LED colorsuch as Who Is It?, Color ID or BeBuzz. You can download some apps directly from the app website.
Follow the prompts to install the app. You may need to reboot your Bold to complete the installation.
4
Launch the app.
5
Browse through the list of colors. Assign a color to a contact by navigating to your phonebook and selecting that contact. Some apps also allow you to assign colors to different message types, such as SMS, email and BlackBerry Messeger instant messages.
6
Save the new settings and exit the app. The next time a contact sends you a message, the LED alert will display the color you assigned to that contact. Messages from contacts that you do not assign a color to will continue to trigger a red LED notification.
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The BlackBerry Bold smartphone features a LED light that flashes when you receive a call or message or when an alarm goes off. The default setting on the Bold triggers a red light when you receive messages. A number of BlackBerry applications allow you to choose from several different LED colors and assign them to your contacts. As a result, you do not need to open a message to see who it is from.
Instructions
1
Access the Sounds menu on your Bold. Select Edit Profiles. Make sure that the LED option reads "On" within the email, SMS and MMS menus for each of your sound profiles. If it reads "Off," the phone will not display an LED alert when you receive messages.
2
Navigate to Appworld.BlackBerry.com. Download a BlackBerry application for customizing the phone's LED colorsuch as Who Is It?, Color ID or BeBuzz. You can download some apps directly from the app website.
Follow the prompts to install the app. You may need to reboot your Bold to complete the installation.
4
Launch the app.
5
Browse through the list of colors. Assign a color to a contact by navigating to your phonebook and selecting that contact. Some apps also allow you to assign colors to different message types, such as SMS, email and BlackBerry Messeger instant messages.
6
Save the new settings and exit the app. The next time a contact sends you a message, the LED alert will display the color you assigned to that contact. Messages from contacts that you do not assign a color to will continue to trigger a red LED notification.
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Why Do My LED Spotlights Glow When the Light Is Switched Off?
Why Do My LED Spotlights Glow When the Light Is Switched Off?
LED spotlights are designed to provide illumination on a specific area using LEDs and mirrors to focus the light. LED stands for light-emitting diode, a type of illumination created by diodes that feature specific elements that lead to the release of electrical energy as different types of light. LEDs are efficient and long-lasting compared to other lighting options, but they also have problems that can develop through the course of their use
Symptoms
It is common for LEDs to glow after they have been turned off. They might flicker slightly for several minutes, or they may produce a low light, only a fraction of their normal brightness, that does not go away. This may be especially noticeable with a concentrated source of light like a spotlight. If you unplug the LED light entirely, the glow should soon vanish.
Residual Voltage
This glow from the LED lights is caused by residual voltage in the electrical line that powers your spotlight. LED bulbs are made out of a collection of diodes. Just one of these diodes is so efficient that the residual current that still travels your power cord is enough to cause it to light up slightly. While this does not indicate a serious problem, it can wear down your LED bulb and might be annoying for your lighting designs. You have a couple of options to rectify the problem.
Diode Blocking
If you want to spend a little money to fight diodes with diodes, you can install a zener diode on the same electrical line that the LED light uses. This diode is designed to block residual voltage for delicate electrical components, so it should be able to stop any incoming current from lighting your bulb. Zener diodes come with different values of blocking, so choose a higher value -- enough to block the voltage flowing through your line.
Cluster Bulbs
Your LED spotlight is probably already a cluster bulb, made out of several diodes. These bulbs have an advantage because they require a higher initial voltage to start. You might be able to fix the problem by switching to an even larger cluster. This requires buying a new LED spotlight, which can be expensive, but can also solve your problem.
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Symptoms
It is common for LEDs to glow after they have been turned off. They might flicker slightly for several minutes, or they may produce a low light, only a fraction of their normal brightness, that does not go away. This may be especially noticeable with a concentrated source of light like a spotlight. If you unplug the LED light entirely, the glow should soon vanish.
Residual Voltage
This glow from the LED lights is caused by residual voltage in the electrical line that powers your spotlight. LED bulbs are made out of a collection of diodes. Just one of these diodes is so efficient that the residual current that still travels your power cord is enough to cause it to light up slightly. While this does not indicate a serious problem, it can wear down your LED bulb and might be annoying for your lighting designs. You have a couple of options to rectify the problem.
Diode Blocking
If you want to spend a little money to fight diodes with diodes, you can install a zener diode on the same electrical line that the LED light uses. This diode is designed to block residual voltage for delicate electrical components, so it should be able to stop any incoming current from lighting your bulb. Zener diodes come with different values of blocking, so choose a higher value -- enough to block the voltage flowing through your line.
Cluster Bulbs
Your LED spotlight is probably already a cluster bulb, made out of several diodes. These bulbs have an advantage because they require a higher initial voltage to start. You might be able to fix the problem by switching to an even larger cluster. This requires buying a new LED spotlight, which can be expensive, but can also solve your problem.
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How to Convert Fluorescent to LED
How to Convert Fluorescent to LED
Converting fluorescent lights into LED fixtures that are maintenance-free and highly efficient requires an LED Conversion Kit or an LED Drop-In Tube. The purpose of making this conversion is to combat the rising energy and maintenance costs that are taking its toll upon the profits of commercial and industrial businesses. Fluorescent lighting consumes a staggering 25 percent of all electricity utilized in the United States. Converting to LED lighting allows consumers to conserve energy and save a huge amount of money on maintenance and energy costs.
Instructions
Convert Using LED Conversion Kit
1
Turn off the power before removing the grill or cover of the lighting fixture.
2
Remove the bulbs and then remove the ballast cover; these should simply twist or slide off.
3.Remove the ballast by unscrewing it and then remove the wire caps to expose the wires.
4
Install the transformer where the ballast was located; use the installation materials from your kit.
5
Install the mounting brackets with sheet metals screws. The fluorescent bulb sockets will act as a guide to installing the brackets in a straight line.
6
Install the lighting sticks, which click directly into the mounting brackets.
7
Connect the power wires to the transformer and the LED lighting sticks.
8
Reinstall the ballast cover once all the power is fully connected.
9
Reattach the grill or cover.
10
Turn on the power to the lights and test that it is working.
Convert Using LED Drop-In Tubes
11
Turn off the power before removing the grill or cover of the lighting fixture.
12
Remove the fluorescent bulbs by sliding or twisting.
13
Install the new LED lighting tubes into the existing light fixture brackets.
14
Reattach the grill or cover.
15
Turn on the power to the lights and test that it is working.
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Converting fluorescent lights into LED fixtures that are maintenance-free and highly efficient requires an LED Conversion Kit or an LED Drop-In Tube. The purpose of making this conversion is to combat the rising energy and maintenance costs that are taking its toll upon the profits of commercial and industrial businesses. Fluorescent lighting consumes a staggering 25 percent of all electricity utilized in the United States. Converting to LED lighting allows consumers to conserve energy and save a huge amount of money on maintenance and energy costs.
Instructions
Convert Using LED Conversion Kit
1
Turn off the power before removing the grill or cover of the lighting fixture.
2
Remove the bulbs and then remove the ballast cover; these should simply twist or slide off.
3.Remove the ballast by unscrewing it and then remove the wire caps to expose the wires.
4
Install the transformer where the ballast was located; use the installation materials from your kit.
5
Install the mounting brackets with sheet metals screws. The fluorescent bulb sockets will act as a guide to installing the brackets in a straight line.
6
Install the lighting sticks, which click directly into the mounting brackets.
7
Connect the power wires to the transformer and the LED lighting sticks.
8
Reinstall the ballast cover once all the power is fully connected.
9
Reattach the grill or cover.
10
Turn on the power to the lights and test that it is working.
Convert Using LED Drop-In Tubes
11
Turn off the power before removing the grill or cover of the lighting fixture.
12
Remove the fluorescent bulbs by sliding or twisting.
13
Install the new LED lighting tubes into the existing light fixture brackets.
14
Reattach the grill or cover.
15
Turn on the power to the lights and test that it is working.
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- DreamBox 7000
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How do I Replace Recessed Lighting With LED Indoor Lights?
How do I Replace Recessed Lighting With LED Indoor Lights?
You can buy an LED retrofit kit to easily enable your recessed lights to accommodate new LED bulbs. If you are using incandescent bulbs, you will save 90 percent of the energy used by switching to LEDs. Although LED bulbs cost much more than compact fluorescent bulbs, they last 10 times longer. That saves you time changing bulbs. And new technology is being developed to drastically reduce the cost of LED manufacturing materials
Instructions
1
Turn off the power supply at the circuit breaker before replacing the light.
2
Remove the bulb from the recessed light housing. Remove the housing from the pan according to the fixture manufacturer's manual. Unscrew the Edison socket housing. Let the socket housing and conduit hang through the hole in the ceiling.
3.Separate the enclosure disk from the Edison base tri-clip that is on the retrofit fixture to allow room for installation. Screw the retrofit Edison base into the socket on the existing housing assembly. Pull the wires inside the retrofit fixture can.
4
Place the tri-clip tabs into coordinating slots in the enclosure disk. Press the enclosure disk on the socket housing. Line up the enclosure disk notches with the housing clips. Bend the tri-clip tabs outward for a tight fit.
5
Surround the socket housing and disk assembly inside the metal clamshell case. Align the two halves of the case with the guide tabs. Check that the disk-side conduit exits through the top-center opening and the housing-side conduit exits through an opening on the side of the case.
6
Force off the set of adjacent removable tabs that provides the most ideal opening route for the housing-side conduit out of the case. Screw the case halves together where the two fastening holes align.
7
Adjust the recessed can retrofit fixture clips to the highest point in the slot. Tighten it gently using wing nuts. Push the clamshell case, electrical connection, and leftover conduit into the ceiling. Place the can into the hole in the ceiling.
8
Loosen the wing nuts on the can’s clip. Pull the clip down and tighten the wing nuts. Repeat for all three clips.
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You can buy an LED retrofit kit to easily enable your recessed lights to accommodate new LED bulbs. If you are using incandescent bulbs, you will save 90 percent of the energy used by switching to LEDs. Although LED bulbs cost much more than compact fluorescent bulbs, they last 10 times longer. That saves you time changing bulbs. And new technology is being developed to drastically reduce the cost of LED manufacturing materials
Instructions
1
Turn off the power supply at the circuit breaker before replacing the light.
2
Remove the bulb from the recessed light housing. Remove the housing from the pan according to the fixture manufacturer's manual. Unscrew the Edison socket housing. Let the socket housing and conduit hang through the hole in the ceiling.
3.Separate the enclosure disk from the Edison base tri-clip that is on the retrofit fixture to allow room for installation. Screw the retrofit Edison base into the socket on the existing housing assembly. Pull the wires inside the retrofit fixture can.
4
Place the tri-clip tabs into coordinating slots in the enclosure disk. Press the enclosure disk on the socket housing. Line up the enclosure disk notches with the housing clips. Bend the tri-clip tabs outward for a tight fit.
5
Surround the socket housing and disk assembly inside the metal clamshell case. Align the two halves of the case with the guide tabs. Check that the disk-side conduit exits through the top-center opening and the housing-side conduit exits through an opening on the side of the case.
6
Force off the set of adjacent removable tabs that provides the most ideal opening route for the housing-side conduit out of the case. Screw the case halves together where the two fastening holes align.
7
Adjust the recessed can retrofit fixture clips to the highest point in the slot. Tighten it gently using wing nuts. Push the clamshell case, electrical connection, and leftover conduit into the ceiling. Place the can into the hole in the ceiling.
8
Loosen the wing nuts on the can’s clip. Pull the clip down and tighten the wing nuts. Repeat for all three clips.
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How to Use LED Lights With Timers
How to Use LED Lights With Timers
Light-emitting diode (LED) lights are known for their long operating life -- up to 100,000 hours. If you left the light on 24 hours a day seven days per week, this would equal 11 years of operation. Simply turning off the LED light from time to time can extend the number of years that the bulb will last. Using an automatic timer is one way to use the bulb only when needed. LED bulbs use less energy than standard incandescent bulbs.
Instructions
1
Select a timer that is specially marked as being safe for use with compact fluorescent lights (CFLs) and LEDs.
2
Position the LED light fixture where you want it to be.
3.Plug the light's power cord into the outlet on the timer. Plug the timer into a wall outlet or power strip.
4
Set the timer to the desired on and off times.
Tips & Warnings
If the LEDS continue to glow briefly after the timer shuts off, this is normal. But if the LEDs stay dimly lit even hours after being turned off by the timer, you will need to choose another timer.
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Light-emitting diode (LED) lights are known for their long operating life -- up to 100,000 hours. If you left the light on 24 hours a day seven days per week, this would equal 11 years of operation. Simply turning off the LED light from time to time can extend the number of years that the bulb will last. Using an automatic timer is one way to use the bulb only when needed. LED bulbs use less energy than standard incandescent bulbs.
Instructions
1
Select a timer that is specially marked as being safe for use with compact fluorescent lights (CFLs) and LEDs.
2
Position the LED light fixture where you want it to be.
3.Plug the light's power cord into the outlet on the timer. Plug the timer into a wall outlet or power strip.
4
Set the timer to the desired on and off times.
Tips & Warnings
If the LEDS continue to glow briefly after the timer shuts off, this is normal. But if the LEDs stay dimly lit even hours after being turned off by the timer, you will need to choose another timer.
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How to Make an LED Display Board
How to Make an LED Display Board
An LED display board is a video display that uses light-emitting diodes. LED display boards are typically used on billboards or store signs to advertise businesses or relay a message. They are also used in public transport vehicles or destination signs. If you make the LED display board yourself, you can use different colored lights on the LED display, and decorate it any way you wish.
Instructions
1
Start off with a piece of cardboard. Cut the cardboard the size and shape you want your display. Spray-paint the cardboard any color you want, if you desire. You can be creative with the cardboard and paint it any way you like, using different colors and patterns if you desire.
2
Measure and mark a grid with spaces 3/4 inch apart on the cardboard. Drill small 1/16-inch holes using a hand-held drill or a drill press if you have one. If you have neither, a sharp pencil will work.
3.Put the LEDs through the holes. Run the column wires down the back of the array, and run the row wires across to the front. This makes it easier to keep the wires from touching each other and shorting out. The positive ends of the LEDs are connected electrically. This means the negative ends connect to each other. Soldering the wires provides the connection and support for the wires between the LEDs.
4
Connect the positive end of the wires of the LEDs to the positive end on the battery holder. Connect the negative end of the wires of the LEDs to the negative end of the battery holder. You can solder these wires, but if you do not have a solder kit, you can twist the wires.
5
Light up the LEDs by inserting the batteries into the holder. When the batteries are inserted, the LEDs light up. Pull one battery out when you want to turn off the display.
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An LED display board is a video display that uses light-emitting diodes. LED display boards are typically used on billboards or store signs to advertise businesses or relay a message. They are also used in public transport vehicles or destination signs. If you make the LED display board yourself, you can use different colored lights on the LED display, and decorate it any way you wish.
Instructions
1
Start off with a piece of cardboard. Cut the cardboard the size and shape you want your display. Spray-paint the cardboard any color you want, if you desire. You can be creative with the cardboard and paint it any way you like, using different colors and patterns if you desire.
2
Measure and mark a grid with spaces 3/4 inch apart on the cardboard. Drill small 1/16-inch holes using a hand-held drill or a drill press if you have one. If you have neither, a sharp pencil will work.
3.Put the LEDs through the holes. Run the column wires down the back of the array, and run the row wires across to the front. This makes it easier to keep the wires from touching each other and shorting out. The positive ends of the LEDs are connected electrically. This means the negative ends connect to each other. Soldering the wires provides the connection and support for the wires between the LEDs.
4
Connect the positive end of the wires of the LEDs to the positive end on the battery holder. Connect the negative end of the wires of the LEDs to the negative end of the battery holder. You can solder these wires, but if you do not have a solder kit, you can twist the wires.
5
Light up the LEDs by inserting the batteries into the holder. When the batteries are inserted, the LEDs light up. Pull one battery out when you want to turn off the display.
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How to Make an LED Boat Light
How to Make an LED Boat Light
Boats need lights on them that last a long time and provide for a bright light. Incandescent bulbs are subject to the stress of the waves and so not the best choice for use on a boat. Converting an existing boat light into an LED light can be done within a few hours and will provide for a better and more efficient light in the darkness. It will also last longer and be more durable than a conventional bulb.
Instructions
1
Put the clean cloth down on a work surface.
Remove the masthead anchor light from its position on the boat and lay it down on the clean cloth.
2
Separate the casing of the masthead anchor light using the flat edged screwdriver. Unscrew the incandescent bulb.
Desolder and remove the wires connected from the casing to the incandescent bulb.
3.Hold the incandescent bulb by the socket at the bottom and place the bulb into the garbage bag. Smash the bulb with the hammer.
4
Remove the bulb from the garbage bag and throw the garbage bag away. Remove all of the fragments of the bulb that are still in the bulb's socket.
Remove any ceramic insulators that might still be in the bulb's socket.
5
Solder the LED light to the current limiting resistor. Solder the LED light to the wires in the casing in the same manner as they were attached to the incandescent bulb.
6
Place the LED light into the incandescent bulb's socket.
Crumble some aluminum foil. Place the crumpled foil around the LED light so as to form a cone.
7
Secure the LED light to the incandescent bulb's socket with the silicon paste. Let the paste dry.
8
Place the socket with the LED light back into the casing of the masthead anchor light.
Secure the casing with the bonding glue.
9
Reassemble the casing of the masthead anchor light. Return the masthead anchor light to its position on the boat.
Turn the masthead anchor light on and enjoy the light from the LED lamp.
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2014年9月9日星期二
How to Make an LED Display Board
How to Make an LED Display Board
An LED display board is a video display that uses light-emitting diodes. LED display boards are typically used on billboards or store signs to advertise businesses or relay a message. They are also used in public transport vehicles or destination signs. If you make the LED display board yourself, you can use different colored lights on the LED display, and decorate it any way you wish.
Instructions
1
Start off with a piece of cardboard. Cut the cardboard the size and shape you want your display. Spray-paint the cardboard any color you want, if you desire. You can be creative with the cardboard and paint it any way you like, using different colors and patterns if you desire.
2
Measure and mark a grid with spaces 3/4 inch apart on the cardboard. Drill small 1/16-inch holes using a hand-held drill or a drill press if you have one. If you have neither, a sharp pencil will work.
3.Put the LEDs through the holes. Run the column wires down the back of the array, and run the row wires across to the front. This makes it easier to keep the wires from touching each other and shorting out. The positive ends of the LEDs are connected electrically. This means the negative ends connect to each other. Soldering the wires provides the connection and support for the wires between the LEDs.
4
Connect the positive end of the wires of the LEDs to the positive end on the battery holder. Connect the negative end of the wires of the LEDs to the negative end of the battery holder. You can solder these wires, but if you do not have a solder kit, you can twist the wires.
5
Light up the LEDs by inserting the batteries into the holder. When the batteries are inserted, the LEDs light up. Pull one battery out when you want to turn off the display.
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