Regulated 9V Power Supply Circuit using IC 7809

In many electronic projects, we need clean and fixed voltage for proper working.

This Regulated 9V Power Supply Circuit using IC 7809, it takes higher DC voltage and gives stable 9V output.

IC 7809 is easy to use and gives safe, constant voltage.

This power supply is very useful for small electronic circuits and beginner projects.

Circuit Working:

Parts List:

In this article AC mains supply goes to transformer and transformer reduces voltage to 12V AC.

Diodes D1 to D4 make bridge rectifier and this bridge rectifier changes AC to DC.

Capacitor C1 smooths DC and removes ripple and this smooth DC goes to 7809 IC input.

IC 7809 gives fixed 9V DC output.

Capacitors C3 and C4 reduce noise and LED with 1k resistor shows power ON.

Diode D5 protects 7809 when power is OFF and diode D6 protects circuit from reverse connection.

Fuse saves circuit from overload and ON/OFF switch controls main power.

Conclusion:

In this project, Regulated 9V Power Supply Circuit using IC 7809 is made and tested.

The circuit gives stable 9V output and it works properly.

IC 7809 makes the circuit easy and reliable.

This power supply is useful for many electronic circuits.

It is good for learning basic power supply concept.

References:

Powering a 12V and a 9V device from single power supply with LM7809 voltage regulator