Variable Voltage Regulator

Posted in DC to DC, Voltage stabilizers, on 2015-09-22

As Ron suggests, controlling the output voltage from a regulator can be made variable in three ways:

  1. Using a fixed reference zener diode to increase the output by the value of the zener
  2. A variable resistor for variable output, note that a voltage less than the nominal regulator is not possible
  3. A chain of diode such as 1N4001, this increases the output by +0.7 V for every diode used. 

Variable Voltage Regulator

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Credits

Source , Author: Ron J