Electro Tech forum,
I'm starting to work on a propellor clock, an old
project I know but new to me.
I'm using mosfets to drive 5mm 3000mcd red leds with
an interrupt driven 16F88. The motor runs at 1725 rpm
so doing a little trig it looks like I'll have to have
them on for about 100-150us.
Experimenting on a breadboard turning them on works
great but it seems to take them a long time to turn off.
I'm not using a current limiting resistor since the on time
is so short. Maybe my approach is all wrong.
There are many web sites on this subject but none get
into this kind of detail.
Anyone have any ideas on this?
Thanks,
jerryd