12 Volt 10 Ampere DC Power Supply Circuit

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In this tutorial, we will demonstrate a simple, easy, and low-cost electronic circuit design. A 12V 10A power supply circuit. 12VDC power supplies are fundamental power supplies with an AC input and 12V DC yield voltage. The yield voltage changes with the input voltage and load. These power supplies are cheap and very dependable.

The circuit uses two TIP2955, a PNP transistor, and a voltage regulator LM7812 IC with a heat sink to boost the power output.

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Hardware Components

The following components are required to make a 12V Power Supply Circuit

S.no	Component	Value	Qty
1.	Voltage regulator IC	LM7812	1
2.	Transistor	TIP2955	2
3.	Transformer	230/12V 10A	1
4.	Bridge Rectifier	10A 50 PIV	1
5.	Resistor	0.1 Ohm 5W	3
6.	Fuse	1A, 10A	1, 1
7.	Electrolyte Capacitor	10µF, 470µF, 47000µF	1
8.	AC Supply	230V	1

LM7812 Pinout

For a detailed description of pinout, dimension features, and specifications download the datasheet of LM7812

TIP2955 Pinout

For a detailed description of pinout, dimension features, and specifications download the datasheet of TIP2955

12V Power Supply Circuit

12v-10a-power-supply-Circuit-Diagram-Schematic

Working Explanation

The 230V to 12V 10A transformer is utilized to step down the main voltage. The 10 Ampere diode rectifies the voltage originating from the transformer and the capacitors are utilized to filter out the voltage signal.

The circuit comprises an LM7812 voltage regulator IC. The LM7812 is from the series of LM78xx, which fixes the output positive voltage regulator IC arrangement.

The most extreme yield current of the IC is 1.5A consequently, we have utilized two TIP2955 transistors to lift the output current to 10A. The two fuses of 1A and 10A are deployed to secure the IC, transistors, and different components of the circuit from overcurrent. Try to utilize appropriate heat sinks with the IC and transistors to avoid overheating.