DC to AC inveter 12 vdc /220 ac

[eng.mserry]

pls : how can i get a pure sin-wave from inverter .........the output of the inverter is a square wave I'd like to remove the harmonics and get sin wave ....any one have a design of filter
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my inverter 12 vdc /220 ac ....and 200 watt

 

[ckshivaram]

build with CMOS 4047 that is the main component of this small voltage converter that transforms a 12V DC into 220V AC. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2x10V / 60VA ).


DIY 12V to 220V converter
Inverter 100W, 12V DC to 220V AC « Circuit Diagram

---------- Post added at 08:45 ---------- Previous post was at 08:40 ----------

build with CMOS 4047 that is the main component of this small voltage converter that transforms a 12V DC into 220V AC. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2x10V / 60VA ).


DIY 12V to 220V converter
Inverter 100W, 12V DC to 220V AC « Circuit Diagram


**broken link removed**

 

[hanif]

Hi,

check following links , they may be useful for you

12vdc-220vac 100/200watts sinewave inverter

https://www.edaboard.com/threads/85453/

dc to ac converter...

https://www.edaboard.com/threads/69051/

12vdc - 240vac power Inverter

https://www.edaboard.com/threads/161550/

 

[kabiru]

Hi,for you to get puresine you have to used the pwm technics otherwise you end up getting modified sine.

 

[eng.mserry]

Thanks to all
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the problem with me is how to design a filter to remove third and fifth harmonic (L , C) filter

 

[kabiru]

You can use this formula. 2pifL=1/2pifc

 

[eng.mserry]

@kabiru
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more details pls i didn't understand

 

[karis870]

Hi..
I think this reference guide is good help for you.