as one car goes 5mm LEDs?

Discussion about tank equipment (lights, heaters, etc.) & books. Also DIY projects.

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Elfreda Blau
Posts: 1
Joined: Mon Aug 13, 2012 2:07 am

as one car goes 5mm LEDs?

Post by Elfreda Blau » Mon Aug 13, 2012 2:11 am

im trying to light up about 50 of these RED 5mm LEDs. standard 2v 20mA LEDs.

i couldnt find a constant current regulator that goes that low. lowest i seen was 300mA.

what do i need to make something like this? my power supply is 12v.
i dont like using resistors because they dont help save the LEDs and just waste power and create heat.

is there a diagram on how to make a circuit that gives out 20mA?

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