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Theory of Pulse Width Modulation

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No22Ben

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Is there any simple way to explain the Pulse Width Modulation ( PMW ) of NE555 in voltage doubler circuit ???
 

If you mean a cap/diode doubler, I don't think so. The
PWM will control nothing unless the capacitor is huge
and on-time rather than C*dV determines the charge
transferred. In such a doubler you would probably prefer
to modulate frequency which more directly controls
delivered current, and can be slaved to voltage if you
want by feedback.
 

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