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.
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.
12 Comments
I presume that the AC output is a sinusoidal square wave, since the mosfets produce on/off outputs. This being the case, is there a practical way of smoothing out the square wave, perhaps by using a coil on one leg of the output?
i don’t get 230V AC from my ckt. I drawing the same ckt as you shown here but output is 163VAc
Design and Simulation Of 24v Dc To 230v Ac Invertor with Automatic Changer ?
i tried it. its clearly 18 Volt square wawe. https://imgyukle.com/i/LUDVnP
I tried this circuit on the bredboard but transistors are almost fire and I didn’t see any Voltage value
All of you plz help me to fix one converter it is urgent , 03219455593. [email protected]
What is The Power of this Device. how Much load It can run?
I tried the circuit, but I couldn’t get the value of the current, I found it to be zero then the vqlue of the puissqnce is qlso wero hwo i do
this looks like about 1amp on the 220vac output if so can i use a doubler for to increase amps.
set the appropriate inductance on the transformer
how would a load sensor operate on the circuit
Hi,
Would this be suitable to run power intensive devices?
Looking at pre-built inverters and they seem to state to use low power items IE 300W
I’m looking to use it for a heater/fan and hair dryer so looking at 2000W.
They would only be used for approx 10 minutes at a time, so wouldn’t be on for hours.
Thank you in advanced,
Andrew