12V DC to 220V AC Inverter Circuit & PCB

Overview
The post is about
12V DC to 220V AC inverter circuit
designed with few easily available components. Inverters are often needed at places where it is not possible to get AC supply from the Mains. An inverter circuit is used to convert the DC power to AC power.
Inverter Circuit
are very much helpful to produce high voltage using low voltage DC supply or Battery.
DC-DC Converter circuit
can also be used but it has certain voltage limitations.
The
12V DC to 220V AC inverter circuit
is designed using
IC CD4047
. The IC CD4047 acts as a switching pulse oscillating device. The n-channel power
MOSFET IRFZ44n
acts as a switch. The
12-0-12V secondary transformer
inversely used as a Step-up transformer from converting low AC to High Ac.
Components Required
The following components are required for making this Inverter project.
1. IC CD4047
2. IRFZ44 Power MOSFET – 2
3. 12-0-12/1A Secondary Transformer
4. 22KΩ Variable Resistor
5. 100Ω/10W Resistors – 2
6. 0.22µF Capacitors
7. 12V Sealed Lead Acid Battery
Circuit Diagram & Construction
The Circuit Diagram shown above is the tested 12V DC to 220V AC Inverter Circuit. It uses 2 power IRFZ44 MOSFETs for driving the output power and the 4047 IC as an
astable multivibrator
operating at a frequency of around 50 Hz.
The 10 and 11 pin outputs of the IC directly drive power MOSFETs that are used in push-pull configuration. Use suitable heat-sinks for MOSFETs as it will produce a huge amount of heat. The output transformer has a 12V-0-12V, 1 Amps on the secondary and 220V on the primary.
Working of the Circuit
The IC
CD4047
is configured in astable multivibrator mode with the help of variable resistor RV1 and capacitor C1. By varying the value of RV1 we can get a different range of output pulse at Q and Q’ pins of CD4047. Consequently, there is a variation in the output voltage at the transformer.
The n-channel power MOSFETs IRFZ44 Drain pins are connected with the transformer secondary pins and common pin in the secondary winding is connected with battery positive. Both MOSFET source pins are connected to the negative terminal of the battery. When the alternate square pulse from Q & Q’ drives the MOSFET, it switches ON. Then the secondary winding is forced to induce an alternate magnetic field. This magnetic field induced produces high alternate voltage around 220V.
Circuit Simulation
The circuit was simulated using Proteus. The simulation gave the desired result as shown in the screenshot below.
You can also check this circuit:
12V to 24V Voltage Doubler Circuit
PCB Designing & Ordering Online
If you don’t want to assemble the circuit on a breadboard and you want
PCB
for the project, then here is the PCB for you.
First I designed the Schematic using EasyEDA. Then I converted the schematic to PCB. The PCB Board for
12V-to-220V Inverter
looks something like below.
The Gerber File for the PCB is given below. You can simply download the Gerber File and order the PCB from
ALLPCB
at
1$
only.
Download Gerber File:
12V DC to 220V AC Inverter
You can use this Gerber file to order high quality PCB for this project. To do that visit the
ALLPCB
official website by clicking here:
https://www.allpcb.com/
You can now upload the Gerber File by choosing the Quote Now option. From these options, you can choose the Material Type, Dimensions, Quantity, Thickness, Solder Mask Color and other required parameters.
After filling all details, select your country and shipping method. Finally you can place the order.
We also made a better version of the Inverter using SG3525 IC. You may follow
SG3525 PWM Inverter
circuit for learning more about the 300W PWM Inverter.