6V Power Supply Using LM7806

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If you want to make a low-cost project with a simple design or you want a power supply of fixed 6V output, this tutorial is for you. In this tutorial, we are making a 6V Power Supply Using LM7806. A power supply is usually referred to as an electric power converter because it converts one form of electrical energy into another form of electrical energy.

LM7806 is a voltage regulator IC with three basic terminal pins input, ground, and output. It has built-in circuitry so it requires fewer external components. The series of LM78xx IC is most commonly used in the circuits of power supplies because they cost less and are convenient and easy.

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Hardware Components

The following components are required to make a 6V Power Supply Circuit

S.no	Component	Value	Qty
1.	Step-down Transformer	230V/12V 2A	1
2.	Voltage Regulator IC	LM7806	1
3.	Heatsink	–	1
4.	Bridge Diode	2A	1
5.	Electrolytic Capacitors	470uF	1
6.	Ceramic Capacitor	330nF, 100nF	1, 1
7.	Connecting Wires	–	1
8.	Breadboard	–	1

LM7806 Pinout

For a detailed description of pinout, dimension features, and specifications download the datasheet of LM7806

6V Power Supply Circuit

Working Explanation

This circuit requires an AC transformer with a primary rating of 230V or 100V and the center-tapped coil should be rated about 12 or 9V with 2A. The 230V is stepped down to 12V and it is passed through a bridge rectifier for the conversion of AC to DC. Then it flows to capacitors C1 and C2, we are using capacitors to filter the noise signal in the DC voltage.

Now this filtered voltage is fed into the voltage regulator IC and it provides a fixed output of 6V. This is passed through another capacitor to further smooth and clean noise in DC output voltage. A heatsink is necessary for this circuit because the IC becomes hot during this whole operation.