/diy/ - Do It Yourself

I want to run 15 IR LED's on 36kHz pulses and the maximum current PEAK for each one is 80mA, should I use 70mA (as a precaution measure since the max is 80mA) and multiply that current by 15 to drive the LED's? (It would be 1.05 amps) Or is 0.80mA safe enough?

I plan to add a 10uF 25V capacitor to help to drain the batteries, since I think 3*AA Ni-Mh batteries (around 3.5v ) can't deliver that amount of current so fast, should I use a bigger value? The period of the signal is 0.027 microseconds, so the capacitor should be charged in half that time in order to have the right value.

I'll add a small resistor in series to avoid going above 1.05 amps, something like 4 ohms should do the job.

I want to make an actually "super" super tv-b-gone (see pic related)