regulated power supply circuit with multiple voltage outputs.

The image shows a regulated power supply circuit with multiple voltage outputs.

1. Input Power:

The circuit receives 220V AC from the mains supply through a plug.

2. Step-down Transformer:

A 24V transformer is used to step down the 220V AC input to a lower AC voltage suitable for rectification.

3. Bridge Rectifier:

The AC output from the transformer is fed into a bridge rectifier, which converts AC (alternating current) into DC (direct current).

4. Filtering:

A 35V capacitor is connected after the rectifier to smooth the pulsating DC and reduce ripples.

5. Voltage Regulators:

Different voltage regulator ICs (from the 78xx series) are used to provide stable DC output voltages:

7805 → 5V output

7809 → 9V output

7812 → 12V output

7815 → 15V output

7818 → 18V output

6. Ground (GND):

A common ground line is shared by all the regulators to complete the circuit.

👉 In summary, this circuit converts 220V AC mains power into multiple regulated DC voltages (5V, 9V, 12V, 15V, and 18V), which are often used to power different electronic devices.

Would you like me to also explain how each voltage regulator works internally in simple terms?