Quote:
Originally Posted by jjoos99
I found an old post on neptune's site that linked to some leds that work out but didnt mention about a resistor. They are 20mA so what size resistor would I use to get it down to the 10mA you mentioned?
thanks
Jeff
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I'd need to know how much voltage the led drops (its Vf) and what the source voltage is to do the normal calculations for sizing a resistor for an LED..
But the formula is here..
http://www.ohmslawcalculator.com/led...tor-calculator
I'm not sure if that LED simulator is just a outputting 10v PWM or something like that in relation to its lunar cycle...