Will an L.E.D. Bulb work in place of licence bulb
10-14-2005, 07:28 PM
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very few LEDs are rated for 12V.
most high intensity LEDs are rated at no more than about 5v. you would have to put a resistor in place to drop voltage down to the required level.
if you find 1 rated at 12v. no problem.
most high intensity LEDs are rated at no more than about 5v. you would have to put a resistor in place to drop voltage down to the required level.
if you find 1 rated at 12v. no problem.
10-15-2005, 09:44 AM
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10-15-2005, 04:18 PM
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You can put led's there, but you cannot give typical LEDs 12v.
If you would like to use LED's first you need to decide what color you would like, then you need to decide how many you would like, finally you will need to search for high quality LED's with a high output and and vewing angle which fits your scenario. Once you have bought your led(s), you will need to know the exact specs.
This will include
Voltage (in the forward region of operation)
Typical Current (again in forward region)
Then depending on if you decided you use 1 or more LEDs you will have to buy the appropriate resistors for them. The purpose of the resistor is to not only provide a voltage drop but to also limit the amount of current through the LED. Like any other diode LED's will allows way to much current to flow, and the current needs to be limited by the resistor.
for example an led with a forward voltage drop of 2.5V and a typical forward current of 50mA, will require a 50ohm resistor if the circuit is to be fed by a 5V source, however if the same setup is to be fed by a 12V source you would need a 190ohm resistor.
There are a number of websites which will help you calculate the required resistor.
If you would like to use LED's first you need to decide what color you would like, then you need to decide how many you would like, finally you will need to search for high quality LED's with a high output and and vewing angle which fits your scenario. Once you have bought your led(s), you will need to know the exact specs.
This will include
Voltage (in the forward region of operation)
Typical Current (again in forward region)
Then depending on if you decided you use 1 or more LEDs you will have to buy the appropriate resistors for them. The purpose of the resistor is to not only provide a voltage drop but to also limit the amount of current through the LED. Like any other diode LED's will allows way to much current to flow, and the current needs to be limited by the resistor.
for example an led with a forward voltage drop of 2.5V and a typical forward current of 50mA, will require a 50ohm resistor if the circuit is to be fed by a 5V source, however if the same setup is to be fed by a 12V source you would need a 190ohm resistor.
There are a number of websites which will help you calculate the required resistor.
10-15-2005, 04:20 PM
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the above mentioned setup applies to 1 led and 1 resistor hooked up in series with the source.
everything will change if you use more LED's, but you can use the above example as along as each set of LED&Resistor (which are hooked up in series to each other) , are hooked up in parallel to the source.
everything will change if you use more LED's, but you can use the above example as along as each set of LED&Resistor (which are hooked up in series to each other) , are hooked up in parallel to the source.
10-15-2005, 04:22 PM
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Originally Posted by tizbad2k,Oct 15 2005, 04:18 PM
You can put led's there, but you cannot give typical LEDs 12v.
If you would like to use LED's first you need to decide what color you would like, then you need to decide how many you would like, finally you will need to search for high quality LED's with a high output and and vewing angle which fits your scenario. Once you have bought your led(s), you will need to know the exact specs.
This will include
Voltage (in the forward region of operation)
Typical Current (again in forward region)
Then depending on if you decided you use 1 or more LEDs you will have to buy the appropriate resistors for them. The purpose of the resistor is to not only provide a voltage drop but to also limit the amount of current through the LED. Like any other diode LED's will allows way to much current to flow, and the current needs to be limited by the resistor.
for example an led with a forward voltage drop of 2.5V and a typical forward current of 50mA, will require a 50ohm resistor if the circuit is to be fed by a 5V source, however if the same setup is to be fed by a 12V source you would need a 190ohm resistor.
There are a number of websites which will help you calculate the required resistor.
If you would like to use LED's first you need to decide what color you would like, then you need to decide how many you would like, finally you will need to search for high quality LED's with a high output and and vewing angle which fits your scenario. Once you have bought your led(s), you will need to know the exact specs.
This will include
Voltage (in the forward region of operation)
Typical Current (again in forward region)
Then depending on if you decided you use 1 or more LEDs you will have to buy the appropriate resistors for them. The purpose of the resistor is to not only provide a voltage drop but to also limit the amount of current through the LED. Like any other diode LED's will allows way to much current to flow, and the current needs to be limited by the resistor.
for example an led with a forward voltage drop of 2.5V and a typical forward current of 50mA, will require a 50ohm resistor if the circuit is to be fed by a 5V source, however if the same setup is to be fed by a 12V source you would need a 190ohm resistor.
There are a number of websites which will help you calculate the required resistor.
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