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Powersupply 30-50A @ 12V with PWM input 10-100Hz or so

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Jester:
Is anyone aware of an off the shelf power supply (ebay is good) with PWM capable input, output about 12Vdc with high current capability say 30A to drive a solenoid at between say 100 and 100Hz?

Terry Bites:
Not off hand, but get yourself a PWM DC motor controller and modify its oscillator.

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