PWM Voltage Control Of Standard Linear IC Regulators 2017-02-13

With many power supplies now being microprocessor based it is desirable to have simple way to control the voltage output of the supply from the μP.
An easy way to do that is with a PWM signal that most μPs can readily generate.
This signal can be averaged to give a DC output voltage to control the regulator.
The accuracy of PWM is not high, but most digital based supplies have digital readouts, allowing good accuracy setting of the voltage.
If high control accuracy is desired, the regulator...

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