bigal_scorpio
Active Member
Hi to all,
Some time ago I made a small PWM controlled LED driver which simply fades on and off some LEDs using a PIC12F683 driving a 2N6796 FET to sink the 12 load of multiple LEDs.
The circuit has worked fine for about 2 years but now my son wants another set of LEDs that rise and fade opposingly.
What would be the best way to accomplish this? I thought of using a depletion mode FET from the same PWM signal but I am not sure if that would have the desired effect or would it look wrong as it would be only on during the off period which is different to the original LEDs but I can't quite figure out if it would look ok?
Can anyone sim a simple PWM fading circuit and just try the depletion mode FET? Or can anyone suggest a better method?
Thanks, Al
Some time ago I made a small PWM controlled LED driver which simply fades on and off some LEDs using a PIC12F683 driving a 2N6796 FET to sink the 12 load of multiple LEDs.
The circuit has worked fine for about 2 years but now my son wants another set of LEDs that rise and fade opposingly.
What would be the best way to accomplish this? I thought of using a depletion mode FET from the same PWM signal but I am not sure if that would have the desired effect or would it look wrong as it would be only on during the off period which is different to the original LEDs but I can't quite figure out if it would look ok?
Can anyone sim a simple PWM fading circuit and just try the depletion mode FET? Or can anyone suggest a better method?
Thanks, Al