Marty Hartwell wrote:
> If one wanted to play with LED's what is a good value for a dropping
> resister to use?
R = (Vsupply - Vled) / Iled
R : resistor value
Vsupply : power supply voltage, must be > Vled
Vled : voltage drop on LED, generally from 1.6 V to 2.7 V
Iled : current, try 5 mA = 0.005 A
Example:
Vsupply = 12 V
Vled = 2 V
Iled = 5 mA = 0.005 A
R = (12 - 2) / 0.005 = 2000 Ohms (use 1800 or 2200 Ohms)
73,
Sinisa YT1NT, VA3TTN
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