[Amps] 90V Var Reg.

[Will Matney]

Hopefilly, somebody here, I'm pretty sure, may have already done this so I dont have to re-invent the wheel. What I need is a good, cheap, simple circuit for a variable 0 to +90 Vdc supply. Originally, I was going to just use a variac, and a rectifier to control a 3 amp DC P.M. motor load. The motor is a 90 VDC though so it needs knocked down if ran off the line. I know I could use a zener-transistor, etc but was hoping somebody may have already done this. It would save me an evening of doing the layout. If so, and you have a link to a circuit, please e-mail me about it. Thanks all in advance.

Best,

Will