Thread: 12v dc to 220v ac inverter circuit diagram.

I want a 12v dc to 220v ac inverter circuit diagram.please send me the simplest circuit diagram to make it practically for home appliances.
The input should be 12v dc and the output should be 220v ac,50 Hz sine wave.
Send me the circuit diagram as soon as possible.

if not for high frequency, you will need a large transformer.

You will need a sine wave in the first place, then I will recommend that you use at least 48 volts in other words 4X12 volt batteries, the higher the input voltage the lower the current and the less transistors will be needed, then you will need a large transformer, with a higher frequency than 50 or 60 Hz you can get away with a smaller transformer but that will not work with most domestic appliances, a transformer welding machine can be used as a transformer, then you will need a 50/60Hz sine wave signal that can be generated with a PIC16F627 with a R2R resistor pack connected to port B and some firmware for the PIC MCU, then you will need about 10 or more pairs of NPN/PNP power transistors and 10 or more driver transistors, the circuit is a simple push pull configuration, let me know if you can lay your hands on the hardware. TIP3055 NPN and TIP2955 PNP

i need the sample circuit because i study about it
thank i hope you will help me!!
best regard !!

ha ha ha ha this is implemented very very much in Iraq due to no contineous electricity there

oh... but i want to use Microcontroller to pure sine wave before input to the transformer na..because i see some inverter are pure square wave to the transformer so we can't use that inverter with Motor or fan....
thank
Best Rergard

realy i do not know but if u remember the fourier series

the square wave is a fourier originaly sinusoidal of different harmonics, so that as i think, it is not a problem,

this what i think,

to all friends on this fourum, please help if i not on right answer.

thanks

A pure sine-wave inverter does NOT use a huge low frequency transformer like the very old square-wave inverters.
Instead it used a high frequency PWM circuit driving a small high frequency ferrite transformer.

oh ok thank for your help but i'm still not clear i hope all friends can help me ...

Did U get Inverters Ckt

here is the circuit diagram with regards

for more circuits see this link

http://www.electronicsforu.com/electronicsforu/lab/

i understood the circkut but what is the input 12V ?A to 220V ?A plz clear my doubt thnx

Its output is a square-wave.
Its max output is about only 100W.
Its BC548 transistors have avalanche breakdown of their emitter-base junctions.
It does not have voltage regulation.

ok i had 1000W wind mill generator but the problem is it produces dc out put can u people the moderator's help me giving a circuit of inverter to produce same 1000W
as AC out put please make it sure by giving the values of resistor's or capacitor's or transister's plz i want to made it on home because i made the generator also at home as wind mill so what i want in simple is a circuit for 1000W DC to 1000WAC
with values of resistor's or capacitor's or transister's can u help me plz and if u can please post the principle how DC is converted to a sine wave or square wave AC pleaseeeeeeee i am in meer need and only trusted on u r post

Originally Posted by kacarot

ok i had 1000W wind mill generator but the problem is it produces dc out put can u people the moderator's help me giving a circuit of inverter to produce same 1000W
as AC out put please make it sure by giving the values of resistor's or capacitor's or transister's plz i want to made it on home because i made the generator also at home as wind mill so what i want in simple is a circuit for 1000W DC to 1000WAC
with values of resistor's or capacitor's or transister's can u help me plz and if u can please post the principle how DC is converted to a sine wave or square wave AC pleaseeeeeeee i am in meer need and only trusted on u r post

Please remember that moderators are not Harry potter's...:D:D:D

Originally Posted by kacarot

ok i had 1000W wind mill generator but the problem is it produces dc out put can u people the moderator's help me giving a circuit of inverter to produce same 1000W
as AC out put please make it sure by giving the values of resistor's or capacitor's or transister's plz i want to made it on home because i made the generator also at home as wind mill so what i want in simple is a circuit for 1000W DC to 1000WAC
with values of resistor's or capacitor's or transister's can u help me plz and if u can please post the principle how DC is converted to a sine wave or square wave AC pleaseeeeeeee i am in meer need and only trusted on u r post

I assume that you are an engineering student of (may be ) electronics
I also hope you remember Newton's Laws. Any conversion will have wastage and 100% is not practicable. after knowing the fundamentals of basic science, perhaps your queries should be thoughtful. Please go through the wind mill methodologies.
The energy is first saved in batteries, using charge controllers. suppose the battery used is 12V .
then you may adopt a sine wave inverter from companies like Microtech, or square wave inverters from other suppliers and connect it. As and when power fails perhaps you can use the inverter to turn the stored energy of batteries into AC , until battery capacity is over. you should have guarding not to deep discharge or over charge, in order to sustain the battery life.

We are here to impart little more of practicability in education and project design, and perhaps not to design and supply designs off shelf. suppose you start some design, got stuck , if you upload what all you have done, perhaps some one can advise you where things might be wrong and how to overcome. thereafter again it is for you to continue.


I hope the aim of the site is also to guide and not to spoon feed.

I think a 1000W 12 to 230V inverter will not so easily feasible:
the current to be switched (inverter) will be AT LEAST (90% efficiency) 90A!
Your losses (transformer/cables/...) will be very high, so I can assume the real efficiency will be not higher than 60/70%.
What I suggest is to work with at least 24V or better 48V as source voltage.

P.S.: because this is a forum and you are not writing SMSs, it would be better if you try to switch to plain English instead of using those awful abbreviations! Thanks.

Thnx mvs sarma u rembered me some thing by telling about faradays laws u know what i asked is hoe a dc is converted to ac while ac to dc can be done by some diodes and capacitors so i just asked the principle if possible ckt ok but only u r post is little bit help ful to me thnx

Kacarot,
Your English is so awful that I can't read it.
Please go to a forum in your own country and talk in your own language.

Most telemarketers here are from India. We cannot understand what they are saying.