100w Inverter circuit 12V to 220V using Transistor

You can read books under at night under a light. Energy from AC main makes it happen. But if you do not have an AC voltage. Do You still use a light? You need to use a 100W inverter circuit and battery.

Also, If you are outside a house, no electricity. You cannot use a lamp with a 12V battery.

This circuit is a mini inverter circuit using power transistor 2N3055 as main components.

It is designed for you that need to use appliances at outdoor or no electricity.  Someone use it in a car or the high mountain etc.

It can be converted 12VDC to 220VAC.  The maximum output power about 100 watts.  It is suitable for normal lighting (all home lamps), also used for radio, Mini TV, Stereo.

Someone uses it for a small soldering iron to repair or build many projects outdoor home.

How it works

100 watts inverter circuit 12v-to-220v using transistors

Figure 1, Circuit diagram of Inverter 12V to 220V 100W using transistors

Figure 1 is a schematic diagram. This circuit will include four main sections.
1. Q1 and  Q2 act as the frequency oscillator circuit.
2. Q3 and  Q4 act as the frequency divider circuit
3. Q5 and Q6 act as the driver circuit.
4. Q7 and Q8 act as the output circuit.

Let’s look at to both transistors Q1,Q2 will be connected together as the astable multivibrator form. It will generate the output frequency about 100 Hz at the collector lead of Q2. Then this signal will sent to the two frequency divider makes the frequency is reduced down about 50Hz

Cause we don’t design the circuit to directly work at 50 Hz. Because the generating the steady low frequency is very hard.

The output from divider circuit is sent to base of Q5,Q6. To increase current up to drive the output transistors Q7,Q8, then drive the transformer, finally to supply load.
Note:
1. Normally, use the 2-3A transformers for 20-30watt for the incandescent lamp. But use need 100watt use must use 8A transformer so expensive for me.

2. The primary coil of transformer use may use 9V CT 9V or 10V ct 10V or 12V ct 12V.


Which normal I use 12V ct 12V makes the output voltage about AC 220V (no load). But there is load voltage will reduce to AC190V

3.This circuit will has output as square wave form. So cannot use for inductor load.

4. This transformer, we may use secondary coil is the output voltage as you need, example we connects to the power amplifier that use AC 24 volts so we use AC 24V secondary coil etc.

How to builds

It is like all our projects. To begin with make the PCB or you can use the universal PCB. Then, assemble all part on PCB as Figure 2. Next check all for error. Check again and check again.

Then apply the 12V 10A battery to this circuit and use the voltmeter to measure AC voltage output. Next connects load to the circuit.

pcb-layout-of-inverter-100watts-12v-to-220v-by-transistors
Figure 2 PCB layout and components layouts of the 100 Watts Inverter, 12V to 220V by Transistors

Parts you will need

Q1-Q4: BC557, 45V 100mA PNP Transistor
Q5, Q6: BD139, 80V 1.5A NPN Transistor
Q7, Q8: 2N3055, 100V, 15A, 115W, >2,5MHz NPN transistor
D1, D2, D3, D4: 1N4148, 75V 150mA Diodes
D5, D6: 1N4007, 1000V 1A Diodes

0.5W Resistors tolerance: 5%
R1, R4, R6, R7: 10K
R2, R3: 150K
R5, R6: 47K
R9, R12: 220 ohms
R10, R13: 560 ohms
R11, R14: 100K
R17, R18: 150 ohms
R15, R16: 10 ohms, 10W Resistors tolerance: 5%

Ceramic capacitors
C1,C2: 0.047uF 50V
C3,C4: 0.01uF 50V
C5: 1uF 50V
C6: 0.1uF 250V
C7: 0.1uF 50V
C8: 220uF 25V, Electrolytic capacitors
T1: 230V AC primary to 12V-0-12V,2-8A secondary transformer.

 

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inenso

This projets are so much helpfull

wasif

i want make a ups for only one electric fan please help me about this

regz

i try to build this inverter but did not work. the one transistor 2n3055 is hot. please any body help me to work this circuit.

Sebin PAul

Is there any probs when we built this circuit in a breadboard……please help me

Djopong Nicodemus

i have done everything but is not working. When i connect the power (battery 12v) is not giving any output at all.And am worry bcos that is my project and am working on it but still is not working so i want u to help me

ANAND DANDGAL

It’s information very helpful me in my project”INVERTER USING SOLAR ENERGY” .

Shafiullah Bajaur

I want to make a 50 watts DC 12V to AC 120V inverter
So please help me.

Ramkumar dutta

I want to know about the cost of 6v, 8v and 12v w inverter circuit. pls help.

CARL WINTER

CAN U SHOW A SIMPLE TRANSISTOR ONLY CIRCUIT
FOR A 500 WATT INVERTER—-12VDC—-220V AC?
APPRECIATE-VERY MUCH FOR A CLEAR DIAGRAM THANKU

Mohammed Hamza

What type of transformer and of which rating should be used????

mehdi

hi
I want to build a system that charging lithium batteries

howell

its funny it works perfectly i tried it up todate its still working

howell

its funny it works perfectly i tried it, up todate its still working

numan

i needs a 500w inverter circuit any one can help me

TAMANCHA EMMANUEL

i want to know the components i can use to build a 12v 7Ah 220v inverter 50w.please the ratings of resistors …not more than two transistor

wisdom

pls l want the size of compunents that could be used to build an inverter that could power 100 wailt bulb.

zain

which type of transformer you used is this a current transformer or simple center tapped transformer plz help me I want to build this circuit

lwanga

thank you sir, it is agood idea.ihave worked it out for two years but still working.even i have improved it to 500W and beyond. God bless you.

wisdom

i need help to build 5000 wait inverter circuilt.

Arun

hai sir i have mini inverter two lights and use TIP3055 and 2N3055 and more plese help me

ElecCircuit.com

Hi,wisdom

You can see: https://www.eleccircuit.com/12-volt-to-220-volt-inverter-500w/
but is 500watt only now I not have a lot of power watt inverter.

ElecCircuit.com

Hi,Arun
Thanks for your feedback.
Yes you can use TIP3055 transistor it is power transistor. I would like to use it. because easy to mount but it expensive than 2N3055.

Brijesh

Plz give how many ampr is required at input side in 12v dc battery?
12v dc but amp_?
and also tell me about the transformer rating, voltage_ and amp_?

ElecCircuit.com

Hi,Brijesh
Thanks for your feedback.
I used Car battery 12V 40Ah. and transformer 2A-3A.
I can use for laptop and 20w lamps.

subbu

simpley and nice projects i hink i is used home applyencants

ElecCircuit.com

Hi,subbu
Thanks for your feedback.

moha

Hello Site is very useful I love some of the questions LaSalle I would love to Create symbol such as this therefore sent this letter to you this Model Micro Inverter using TIP41 or 2N6121 Eleccircuit_com.mht I do not want to stochastic problems during the building and district corect me because I am beginner in electronics and components diffrant from one country to another and often for name But I’ve found a wire size of 20 within the components and district did not understand his place in the circle Is if it is used Transforma strongly 500 watts and district… Read more »

moham

hi

i Ask about Circuit called xenon raise electricity for the car battery front bulbs for cars and light color makes the car think the white circle enlarge Volt
[email protected]
thanks

MOHA

hi
ineed inverter like this
web adress is arabtronics.net/products/INVERTER-KIT-W%7B47%7DT-12V-24V-220V-750W.html

[email protected]

ElecCircuit.com

Hi,Moha
Thanks for your feedback.
This circuit is easy: https://www.eleccircuit.com/micro-inverter-by-2n5121/
You can use TIP41 transistors or use this circuit:
https://www.eleccircuit.com/tag/mini-inverters/

This circuit 100watt inverter worked and you must use 8A-10A transformer for real watts output.
and 500watts output use must use 40A transformer.

You’re welcome. I also poor English If you not understand please tell me.

moha

hi 4 all
momename thannks
Thanks so much for the founder of the site, which allowed us to posts and thanks also to his esteemed visitors
Ask the electronic circuit for xenon used in lighting the front of the car and gives a strong white light searched the forums English and found them talking about circles xenon flash any light intermittent and disco parties please help me with knives circles components electronic large-sized conventional and not system components printed and does not Electronics Small Size
Thank you
And you greetings
[email protected]

moha

hi
momename

This line did not understand it the last line in the electronic components to build this circuit easy inverter

solid Wires no. 20 AWG length 1 feet, for what iam not understand is it for main connector or???please help me
thanks

[email protected]

moha

mome.name

Hello
What is the reason that in the absence of even one letter omitted patient Xue

مرحبا
ما سبب الغياب ما في حتى رساله واحده بيها اصبر شويه ما الوعد بيناتنا الفه اغنيه سودانيه مهداه لحصرتك
mome.name

moha

mome.name

Hello
What is the reason that in the absence of even one letter omitted patient Xue

مرحبا
المهندس الغالي
ان كنت تتكلم العربيع يجب ان نتخاطب بالعربيه في رسائلنا القادمات واشكر رحابة وسعة صدرك وكرمك الفياض

ما سبب الغياب ما في حتى رساله واحده بيها اصبر شويه ما الوعد بيناتنا الفه اغنيه سودانيه مهداه لحصرتك
mome.name

MOHA

hi
4all

who is inverter can run fans and motors sny inverter or none

thanks

ElecCircuit.com

Hi,Moha
This circuit cannot be used for AC fans or AC motor because it is square wave inverter.

I am sorry now not have sine wave inverter.

Thanks for visit.

prits

hello its prits again.. i want to know about the cost of total circuit..

Sam

Can you please give me the list of all components……….and how many amps of transformer and battery you are using…..plz

tahir

sir!
i want to apply this idea in my final year project please send me more detail about Inverter 12V to 220V 100W by Transistor.
i want to submit proposal on this topic for my final year project

tahir
chayapon

Hi, prits
Thanks for your feedback.
Please look at text above again.

chayapon

Hi, Sam
Thanks for your feedback.
Now I add the parts list, please look at text above again.

chayapon

Hi, tahir
Thanks for your feedback.
Please read again.

simon

Hey needed circuit diagram on how to make mppt solar controller regards

chayapon

Hi, simon
Thanks for your feedback.
Now I not have the high power controller.
But sometimes you may idea from simple circuit look athttps://www.eleccircuit.com/category/battery-charger/solar-cell/

saurav

total spend on this above cited project

Manoranjan

thanks for give us this information.

sai

Is that Inverter 12V to 220V 100W by Transistor will work properly………….?

amol

12ct12/230v what is 12ct12

ElecCircuit.com

Hi amol,
Thanks for your feedback.
Please look at T1___230V AC primary to 12V-0-12V,2-8A secondary transformer.
CT = center trap

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