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/diy/ - Do It Yourself

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>> No.1934649 [View]
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1934649

I'm wondering about an easy way of converting a PWM output to DC to control a fan with no PWM wire, I saw a circuit that turns the PWM signal into a voltage using an op-amp but I figured pic related would work... the PWM pulses would allow pulses of current to charge the capacitor, and you could control the charging rate by adjusting the resistor... is this dumb?

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