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Answers : Technology

can you u get 12 volts down to 3 volts by using a 5 volt regulator and a 1/4th wat resistor?

i need my car to go from 12 volts to 3 volts for LEDs... please help me!

4 answers	Answer it!

Aug 6, 2009. 7:39 PM

Rainh2o says:

Why not just build a 3 volt regulator

Aug 3, 2009. 7:05 AM

frollard says:

Agreed with lemonie - use 5-10 leds in series to drop the voltage - WAY more efficient that way, instead of burning off 75% of the power in a resistor.

Aug 3, 2009. 12:23 AM

steveastrouk says:

if its just for LEDs you could put a couple in series with a resistor, and reduce the power dissipation in the resistor.

Aug 2, 2009. 11:06 PM

lemonie says:

You can omit the regulator, put your details in here:
http://led.linear1.org/led.wiz

L

Answer it!

can you u get 12 volts down to 3 volts by using a 5 volt regulator and a 1/4th wat resistor?

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can you u get 12 volts down to 3 volts by using a 5 volt regulator and a 1/4th wat resistor?

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