Hey everyone. I'm looking for some help with a voltage regulator design. I have a CNC machine that I am retrofitting. The power supply puts out 85-90 volts dc. I am looking to reduce that voltage to 65-75vdc. The motor drives will draw about 8 amps max. I'm thinking about using a voltage regulator that uses pwm. I would like a very simple circuit. I know a little about Arduino programming so I may use one of those to produce the PWM. I am looking for comments and ideas on how I can reduce this voltage. I see this picture online and was wondering what you thought. Thanks for your help and hope to hear from you soon.
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