MrDEB
Well-Known Member
I have a IR dector on a brdge spanning across a pinewood derby track. The dectors are mounted to timmers.
My big mistake is I thoght it was working (IR emitter in track but pulling 200ma instead of 20ma.
Tried adding a small resistor to get to 20 ma but the dector wouldn't reconize.
I Guess overdriving an IR emitter really increases the output.
Well the IR leds didn't last very long.
Installing some 6v Halogen bulbs in track (seem to work) but running 4 D cell batteries and the bulbs draw .8 amps. Guess the 4 D batteries wouldn't last too
long.
My next tricjk is to use an old computer power supply (5v) and the magenitic switches that turn on the lights and the timmers will handle up to 3 amps.
Just have to worry that the Halogen bulbds don't stay on toooo long. Them bulbs get hot but boy are they bright!!!
This is getting old as far as trying to get something to run right.
My big mistake is I thoght it was working (IR emitter in track but pulling 200ma instead of 20ma.
Tried adding a small resistor to get to 20 ma but the dector wouldn't reconize.
I Guess overdriving an IR emitter really increases the output.
Well the IR leds didn't last very long.
Installing some 6v Halogen bulbs in track (seem to work) but running 4 D cell batteries and the bulbs draw .8 amps. Guess the 4 D batteries wouldn't last too
long.
My next tricjk is to use an old computer power supply (5v) and the magenitic switches that turn on the lights and the timmers will handle up to 3 amps.
Just have to worry that the Halogen bulbds don't stay on toooo long. Them bulbs get hot but boy are they bright!!!
This is getting old as far as trying to get something to run right.