VARIABLE POWER SUPPLY 1.5-24V

This simple circuit is bridge rectifier circuit can be used to power the circuits described in my previous blogs. The main  components required are listed

  • 240/24 V 1A Transformer
  • LM317 Voltage Regulator
  • IN4001/4007 Diodes

  • Potentiometers/variable resistors
  • Resistors
  • Capacitors
  • Breadboard or PCB
CIRCUIT DIAGRAM
              The transformer is used to step down the 240V AC supply to 24V. Bridge rectifier converts this AC to the Direct Current. This pulsating DC is filtered using the capacitor to get a clean DC and is given to the input of LM317 voltage regulator IC. Depending on the variations in the potentiometer the output gets varied. It is necessary to use a heat sink along with the IC because it became hot while the operation.

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