220V HOMEMADE PORTABLE POWER INVERTER

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About: a MAD man who fancies himself a genius

Hello friends

This is a tutorial about “How to make a 220V portable power inverter” This inverter is capable to power CFLs,tube lights,dc fan ext. it can handle up to 150W.even you can charge your laptop and mobile

Note: this is a 220v, 50Hz square wave inverter

Supplies:

Step 1: The Inverter

First things first. you need an inverter. I am using an IC based inverter just because of its price to performance ratio

Fig shows the circuit diagram of the CD 4047 based inverter. It’s a square wave inverter capable to handle up to 180W.to get maximum efficiency I am using IRFZ44 power MOSFET

These are the components you need for the inverter

1 - IC CD4047

2 - 18 Pin DIP IC Socket Base Connector

3 - 1K, 18K, & 100Ω- (1W x 2) Resistors

4 - 0.22µF Capacitor ( any type)

5 - 12V rechargeable battery

6 - PCB board

7 - IRFZ44 MOSFET x 2(use suitable heat sinks)

8 - 3 PIN PCB Mount Screw Terminal Block Connectors

9 - 12-0-12, 10A center tapped transformer

10 - wires

The total costs of these components are less than $20 (1500 Indian rupees)

Fig shows the finished circuit. Designing of the circuits is deepening on your ability. I am not an “electronics man” so I am using an ordinary PCB board

Step 2: The Box

Now

we want to make a box .I am using an old ups box as cover and some plywood to make the base

You can use any type of box or container for your inverter

My box has two parts. One is a plywood base to mound everything and second is a metal cover to protect the components

Step 3: Fitting and Wiring

Now we want to connect the whole parts together

Fig show the whole circuit

Now we can put everything inside the box

I am using 6A three pin sockets as outlet with a 6A switch

Finally I added stereo jack connector as charging port

Step 4: Charging

I am using a 15v 2A homemade charger to charge the battery

This is the circuit of my charger

The best part is you can also charge the battery with solar panels

Step 5: The Moment of Truth

Now this is the finished portable power inverter

You can carry it anywhere you want .total weight of the inverter is around 3Kg

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203 Discussions

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Fearsome420

Question 7 weeks ago on Step 5

How much further do you want to expand I have a lot of similar integrated parts and free flowing ideas. My overall intent is Noble piece prize . I like where your minds at im just curious your intentions and expectations ?

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gijopm333

3 months ago

Hey man i just made the inverter but when i connect my 12v 6A transformer the wires are heating and it blows,i had double checked the circuit but couldn't find any error,is the problem of the connection wire

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AyushS122

Question 4 months ago

hello there , can you explain the circuit diagram (like working of mosfets and caps.) or suggest any videos so that I can get the full circuit information?

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shikihos

Question 7 months ago on Step 3

Hello Sir. Can you please show me the wiring diagram in details

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SavasB1

Question 8 months ago

how to calculate output watt?

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dineshl10

Question 8 months ago on Step 1

What is the price of 12 0 12 , 10 amp transformer ?

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ROBIN ROYSONS

10 months ago

When I connect both the mosfets to both the wires of the transformer it shows a short circuit on the power supply,but if I connect only 1 mosfet drain to one of the transformer wire it gives 220 v Ac. Can you tell me where I could have gone wrong?

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shankar1790Dawud hassan

Answer 11 months ago

Look this is the simplest inverter that you can build with just a few components which is easly available in electronics shop.
prototyping is much cheaper than the pcb version for this project. If you any doubt building this just ask here.
Best of luck

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Moses270

Question 11 months ago on Introduction

ease Sir cab i get the complete circuit for the project. Am just a beginner I want have it

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vina1991chiboy828

Reply 1 year ago

no it's a square wave inverter,so there is grinding noise from the motor

to run a ac fan smoothly you need a sine wave inverter

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icengvina1991

Reply 12 months ago

You need to diminish the third harmonic with a series inductor.

ie the third harmonic wants to run the motor in reverse at three times the speed on 1/3 the power !

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vinayv23

1 year ago

how to increase the load capacity to 250w

with any changes in this circuit

2 replies
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vina1991vinayv23

Reply 1 year ago

use 20 amp transformer (12-0-12)

and use more transistors in parallel, i mean MOSFET

also use large battery

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icengvina1991

Reply 12 months ago

Simple reasoning all power components need to be increased :-)

Too bad there is no intellect upgrade by increased blood flow ??

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jw18782197

1 year ago

sir, you have used a 25A full wave rectifier bridge and 1000 microfarad capacitor to make a 15V 2A battery charger. If i want to make a 15V 500mA charger then what'll be the value of full wave rectifier bridge and capacitor??

1 reply
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shankar1790jw18782197

Reply 1 year ago

look the bridge rectifier is so selected that double current rating of your transformer

for yor need 1n4007 max current 1amp will work