Introduction: 220V HOMEMADE PORTABLE POWER INVERTER

Picture of 220V HOMEMADE PORTABLE POWER INVERTER

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

Picture of 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

Picture of 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

Picture of 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

Picture of 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

Picture of 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

Comments

vinayv23 (author)2017-08-08

how to increase the load capacity to 250w

with any changes in this circuit

niraj.lalsangi (author)2017-07-08

Nice project i like it very much

Poster of this project has very good knowledge about the electronics

But I would like to suggest 1 thing

1. Making inverter takes about 150 -200Rs

2 .Transformer is costly in india 12 - 0 - 12 5 Amp about 700 to 800 rs

3.battery 900 1000 rs

4 over all project cost more than 2500/-

simply removing above 1 and 2 buy 200watt car inverter 700/-Rs

and put instead of 1& 2

output increased by wattage and only have to connect the 3 part

1.Charger for battery

2.200 watt inverter with battery (inverter has switch and socket)

NIRAJ

INDIA NAVI MUMBAI

vina1991 (author)niraj.lalsangi2017-07-16

now i am working on a portable car inverter with sg3525 ic

i think the total cost of that project is less than 200 RS

superbme (author)2017-07-14

what will be the total cost to make this inverter.

vina1991 (author)superbme2017-07-16

that deepens on the parts you are going to use,like current rating of the transformer,battery ...ext

the circuit is very cheep to make .only need a 4047 and some resister and a capacitor

HakimB1 (author)2017-01-02

may i know, if inverter only support 25W but our electric device consume about 50W. what's happen to inverter?

vina1991 (author)HakimB12017-06-19

over heated MOSFET,resister, transformer and IC

StarkR (author)2017-01-06

sir, i made a inverter but how to find the circuit is work with out transfomer

vina1991 (author)StarkR2017-06-19

use a multimeter

set multimeter to dc and connect black prob to drain and red prob to source,if you get a 12v reading is working

syedshaeedsh (author)2017-03-11

this circuit is not working for me..pls help

vina1991 (author)syedshaeedsh2017-06-19

are you connected both MOSFET on a same heat sink ?!

it's a disaster

use 2 heat sink or use mica mica insulator

xeran (author)2017-03-20

what can i do to increase the power output of the same inverter, please somebody help me ...!

vina1991 (author)xeran2017-06-19

use high current transformer

use high current MOSFET (like IRFP250)

jw18782197 (author)2017-06-14

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??

vina1991 (author)jw187821972017-06-19

you can make a full bridge rectifier with 4 1n4007 diodes or bye a new one or salvage from old PCB's

you can use any capacitor but if you use higher value (capacitance in uF) capacitor you will get smooth DC output

jw18782197 (author)2017-06-14

sir which wires have you used for making the circuits??

vina1991 (author)jw187821972017-06-19

common copper wire at least 6 amp carrying capacity

jw18782197 (author)2017-06-18

Could you suggest me which battery should i use -- 12V lead acid or 12V lithium ion. Pls reply.

vina1991 (author)jw187821972017-06-19

use 12v lead aced battery
because an in inverter need more current
a 12 v 7 Ah battery is enough for 3 hours (or more) use
also its economical

Aiwin anil john (author)2017-05-11

1.can i use a 6v rechargable battery along with a 6v transformer for this circuit.
2.is there any other mosfet for IRFZ44.
Thanks for ur reply in advance.

vina1991 (author)Aiwin anil john2017-05-11

every MOSFET have a certain threshold voltage like 4 v for IRFZ44
ensure that your MOSFET will get that voltage

you can use IRF540.630,840..... result may vary

using 6v battery and 6v transformer may be a crazy idea ;)

GabrielG190 (author)2016-12-15

hi, i can't find ic4047 is there any any replacement for it? Thanks.

AttonM (author)GabrielG1902016-12-20

Try using a p and n channel mosfet to make a cmos inverter for the signal of the 555 timer. Then use it to drive the mosfets to produce the square wave, else the ardunio could work rather well.

MuhammedS43 (author)2016-12-13

a good try

pmshah (author)2016-03-03

You do realise that transformers do not like square waves. It is going to have 50 hertz dc components. Inductances have practically zero impedance for dc current. Watch out otherwise your transformer is going to get hot. BTW this would be useful only for resistive loads like heating or universal (AC-DC) motors. Don't use on anything else.

vina1991 (author)pmshah2016-03-03

do to lack of knowledge in electronics,i dont know the problems of the square wave

but sir. i am still using this inverter to charge my mobile every day.i can't find any unusual things

thormj (author)vina19912016-03-03

Laptop, cell phones, and most modern power supplies are very tolerant of most things. Despite big transformers not liking square waves (little ones don't mind nearly as much), you'll find that your inverter will work for most things because the transformer will make things "less square" because it acts as a very large inductor (for motors, it might make them noisier/hotter than usual, but they should still work).

vina1991 (author)thormj2016-03-03

yes sir.my AC table fan make a grinding noise when i connected it to my inverter

but today i found something strange.wen i connect my table fan to my office UPS(APC RS 1500VA)the same grinding noise is coming from the fan!what is the meaning of that?is that UPS is not a sine wave inverter?

Is your inverter able to drive an led TV?

yes! but not safe

How much wattage an led TV take.

Robert Powell (author)vina19912016-12-03

It should be safe, modern TV's use a SMPS or switching mode power supply that is very tolerant to a wide voltage range and will even accept DC if it is within the voltage range of your device.

thormj (author)vina19912016-03-03

Most UPS's aren't pure sine wave either (it's costly and most people use UPS's on computers which don't care what shape the wave is in). Some are (used to be some computers cared a bit, and those audio people always care), so you can get "stepped sine" (usually 4-6 levels), or you can get a pure sine inverter at extra cost (and the labels on the UPS/inverters usually boast about that).

If you want to cut down on the noise a bit, you can put a capacitor across the output (beware -- these are specially rated caps; see http://www.vishay.com/docs/28153/anaccaps.pdf), and it will reduce the high-frequency noise a bit (at the expense of making the transistors warmer).

pmshah (author)vina19912016-03-03

You are lucky in this regard. Most phone chargers (not all) are SMPS based so they can handle square wave. Even the load is minimal, , <10 watts for fastest charger, so chances of the transformer overheating are minimised. Unless you are far away from wall outlets or there is no service why would you want to carry this monstrosity everywhere?

Robert Powell (author)pmshah2016-12-03

Maybe they do not have reliable AC power all the time so they can use this with a solar panel to have a stable power source.

vina1991 (author)pmshah2016-03-03

'no sir , i don't need a 3 Kg inverter to charge my phone :)

but i am still testing my inverter to make it more batter

SiamB1 (author)2016-11-05

I am facing problems-

1) 0.22 uF is unavailable in our country.

2) 100 ohm(1W) is unavailable but 100ohm(5W) is available in our country.

3) The rating of CFL bulb is very very less than 10A.

Please suggest solution to the above problem asap.

Thank you.

pmshah (author)SiamB12016-11-06

You can simply place capacitors in parallel to add up to the required value. 100 ohm 5 watt can comfortably be used in place of the 1 wall resistor. No problem except for size. In fact it would be better choice from safety point of view.

vina1991 (author)pmshah2016-11-07

yes you cam make .22uF by placing capacitors in parallel but NOT SIMPLE

if c1 is .33uF and c2 is 1uF

Total capacitance = c1c2/c1+c2

= 0.24812 uF

pmshah (author)vina19912016-11-07

You are sadly mistaken. Refer back to your text books. If you connect the .33 µf and 1.0 µf in parallel you simply get 1.33 µf and not 0.24812 uF as you have said.

Here is a link for you that explains properly.

http://www.allaboutcircuits.com/textbook/direct-current/chpt-13/series-and-parallel-capacitors/

vina1991 (author)pmshah2016-11-08

OMG!!!!!! sorry :(

i mean Series

SiamB1 (author)pmshah2016-11-06

Thank you very much for your reply :) . But what is the solution of third problem?

pmshah (author)SiamB12016-11-07

I think you mean 10 W and not 10 A. 10 A would mean at least 2400 Watts at 240 Volt supply. O beleive even CFLs have a tiny inductor to initiate the lamp by an ionizing high voltage pulse. Perhaps you could try it and give us your feedback. Should not be a problem though. The load might be just too low for the circuit to operate reliably.

vina1991 (author)SiamB12016-11-06

1) try to find sum from old electronics

2) use 100 Ohm 5W

3) need more informations?

SiamB1 (author)2016-11-06

Thank you very much for your reply :) .But what is the solution of third problem?

KyawT18 (author)2016-10-07

Can be use with 300W(25A) transformer?

Aabhishek Sharma (author)2016-08-06

Hi vina sorry for disturbing you again, but could you tell me that why the MOSFET IRF630 in circuit undershown becomes very hot. Is this a defect? Or it is common. tell me about your experience with this. Does using the IRF540 makes any difference? Please tell me..

heating MOSFET is not a big problem but check all connections one again.these are main error indications i find in my test

1) one MOSFET is hotter than other one

2) output load is blinking(if load is light)

3) transformer became very hot

IFPZ44 is better than IRF630 and 540

PushpithaD1 (author)vina19912016-09-06

Please explain about the transformer and where can I find a transformer like this

You just have to say the shopkeeper that you want a 8 Ampere 12-0-12 transformer or you can also use 5amp

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