Building a pwm circuit to control a 90v dc motor at 20amps. will this Patent us7248015 Simple dc motor speed controller circuit
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![Building a PWM circuit to control a 90v DC motor at 20amps. Will this](https://i2.wp.com/i.stack.imgur.com/J6boS.jpg)
![Simple DC Motor Speed Controller Circuit](https://3.bp.blogspot.com/-8ubJ4AHNRNg/T6X5AxFEeKI/AAAAAAAABR4/IHeom8SClzY/s1600/PWM+motor+control+circuit.png)
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![Simple DC Motor Speed Control Circuit Diagram using IC 555 Timer](https://i2.wp.com/circuitdigest.com/sites/default/files/circuitdiagram/DC-Motor-Speed-Control-Circ.gif)
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