Looking for a dimmer

[727737Nut]

Trying to find a 0-5V light dimmer that is high side pwm dimmer.  Everything im finding is low side ie PWM the ground side.

Thanks
Rob

[Jan737]

Just curious, why a high side pwm dimmer?

This is a DYI solution, or are you looking for a ready one?

http://project.irone.org/power-width-modulator-with-555.html

Jan

[727737Nut]

All Real aircraft panels get the ground through the frame of the aircraft.  They also run on 5VAC so it is not a big deal. Butwhen you drive them with 5Vdc like we do then it becomes a big deal.  They are not isolated like LED lighting is.  Hence the reason for high side dimmer. 
Thanks for the link but that is a low side dimmer. 
Rob

[KyleH]

If you want to make it high side, change the MOSFET in the circuit to a P-channel, and swap the location with the motor.

Ones that can deliver the kind of power you are looking for are pricy. That's why most everything it low side drive.

[727737Nut]

DUH! moment, Think back Rob! 60's 70's cars  lol  simple and works!

http://www.aircraftspruce.com/catalog/elpages/rheostat.php