12V DC to 220V AC Inverter Circuit & PCB

A circuit for converting 12V DC to 220V AC using only a few commonly accessible components is shown below. When AC power is unavailable from the mains, inverters are usually necessary. An inverter circuit is used to convert DC electricity to AC power. For generating high voltage from a low-voltage DC supply or a battery, inverter circuits are particularly handy. A DC-DC Converter circuit can be used, although it has voltage limitations.

A 12V DC to 220V AC inverter circuit is built using the IC CD4047. A switching pulse oscillator is performed using the IC CD4047. As a switch, the IRFZ44n n-channel power MOSFET is used.  Inverting low AC to high AC, the 12-0-12V secondary transformer is utilized as a step-up transformer.

Components Required

  • IC CD4047
  • IRFZ44 Power MOSFET – 2
  • 12-0-12/1A Secondary Transformer
  • 22KΩ Variable Resistor
  • 100Ω/10W Resistors – 2
  • 0.22µF Capacitors
  • 12V Sealed Lead Acid Battery

Circuit Diagram & Construction

220V AC Inverter Circuit Diagram

The accompanying diagram depicts the tested 12V DC to 220V AC Inverter Circuit. Two high-power IRFZ44 MOSFETs supply the output power, and the 4047 IC functions as an astable multivibrator with a frequency of around 50 Hz.

Power MOSFETs are driven in a push-pull configuration using the IC’s 10 and 11 pin outputs. MOSFETs generate a lot of heat, so utilize heatsinks that are designed for them. The secondary voltage of the output transformer is 12V-0-12V, and the primary voltage is 220V.

Working of the Circuit

With the help of variable resistor RV1 and capacitor C1, the IC CD4047 is configured in astable multivibrator mode. We can generate a variable range of output pulses at the Q and Q’ pins of the CD4047 by changing the value of RV1. As a result, there is a variance in the transformer’s output voltage.

IRFZ44 n-channel power MOSFETs The transformer secondary pins are connected to the drain pins, and the secondary winding’s common pin is connected to the battery positive. The negative connection of the battery is linked to both MOSFET source pins. The MOSFET turns on when the alternate square pulse from Q & Q’ drives it. The secondary winding is then driven to create a different magnetic field. This magnetic field induced produces a high alternate voltage of around 220V.

Circuit Simulation

The circuit was simulated using Proteus. The simulation gave the desired result as shown in the screenshot below.

Simulation Circuit.

PCB Designing & Ordering Online

If you don’t want to assemble the circuit on a breadboard and you want a PCB for the project, then here is the PCB for you.

12V to 220V Inverter Schematic

First I designed the Schematic using EasyEDA. Then I converted the schematic to PCB. The PCB Board for Lithium-Ion Battery Charger looks something like the below.

12V to 220V Inverter PCB

The Gerber File for the PCB is given below. You can simply download the Gerber File and order the PCB from

Download Gerber File: 12V DC to 220V AC Inverter

Now you can visit the NextPCB official website by clicking here: So you will be directed to the NextPCB website.

You can now upload the Gerber File to the Website and place an order. The PCB quality is superb & high. That is why most people trust NextPCB for PCB & PCBA Services.

You can assemble the components on the PCB Board.


I hope all of you understand how to design a 12V DC to 220V AC Inverter Circuit & PCB. We MATHA ELECTRONICS will be back soon with more informative blogs.

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