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

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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206 Discussions

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ROBIN ROYSONS

11 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?

1 reply
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shankar1790ROBIN ROYSONS

Reply 8 days ago

Two cases
1. 2nd Mosfet is bad.or
2.ic cd4047 is bad (not completely oscillatating )
Check ic4047 oscillation with DMM (multimeter) for voltage at pin 11 and negative and pin 10 with negative wile mosfet and x-mer disconnected.
They must be half of the supply voltage at both pin and also check pin 13 for voltage bw pin 13 and negative (battery) .
It must be double (addition) voltage compare to pin 10 and 11

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AyushS122

Question 5 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?

1 answer
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gijopm333

4 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

1 reply
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shankar1790gijopm333

Reply 8 days ago

Might be possible your mosfets are bad or you connected heavy load at output.cross check circuit carefully
Always use thicker wires and connect mosfet sources terminal directly to battery negative and use thick wire

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Fearsome420

Question 2 months 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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shikihos

Question 8 months ago on Step 3

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

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SavasB1

Question 9 months ago

how to calculate output watt?

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dineshl10

Question 10 months ago on Step 1

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

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shankar1790Dawud hassan

Answer 1 year 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 1 year 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 1 year 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

1 reply
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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