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olanre
Joined: 26 Aug 2007
Posts: 16
Location: Nigeria
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 27 Aug 2007 14:40 convert square wave to sine wave |
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| I have been working on aninverter but I found out the inverter could not power on a television or computer monitor.I think probably the problem is due to the characteristics of the output waveform,which is square.Please how can I solve this problem?[/url]
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plusminus
Joined: 27 Jul 2007
Posts: 98
Helped: 12
Location: the Netherlands
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27 Aug 2007 14:57 how to convert square wave output to sinewave |
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| Use a passive low-pass filter. Mostly an inductor in series with your load or a capacitor in parallel. But you never get a real nice 50 or 60Hz sinewave.
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didiet78
Joined: 05 Sep 2007
Posts: 16
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06 Sep 2007 6:08 how to convert square to sine |
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Change your inverter with modified sine wave
Or technology.niagarac.on.ca/people/mcsele/i2k.htm, Professor Mark Csele's Projects Page - The I2K Power Inverter
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Davood Amerion
Joined: 01 Mar 2005
Posts: 589
Helped: 90
Location: Persia
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06 Sep 2007 8:05 convert sine wave to square wave |
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I think output power of inverter is not sufficient,
so its output voltage dropped when connect to load.
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Google
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06 Sep 2007 8:05 Ads |
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olanre
Joined: 26 Aug 2007
Posts: 16
Location: Nigeria
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18 Sep 2007 12:18 convert square to sine wave |
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| Re 12v-220v modified sine wave inverter reply by didiet78. I appreciate your reply to my request. I have look through the circuit diagram but the text is written in a language i don't understand. The transformer in the inverter schematics, is it not a laminated core transformer? Can u please direct me to the site where i can get detail of the schematics.Thanks a lot
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
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18 Sep 2007 13:37 converting a square wave to sine wave |
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| well powering up a tv needs very high voltage and hence pulse transformers are used for this purpose... they r specialised to have square wave as their input,,,, ordinary transformers suffer in the case of pulse due to the abrupt transition...
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nguyennam
Joined: 06 Sep 2006
Posts: 459
Helped: 28
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18 Sep 2007 14:44 how to convert square wave to sine wave |
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| Some cases, people can convert the squarewave voltage to sinewave one by using the resonance transformer with primary winding connected to the square source, and the secondary in parallel with a capacitor making a resonance circuit at that frequency and providing the sinewave output. The sinewave here is perfect.
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andre_teprom
Joined: 07 Nov 2006
Posts: 171
Helped: 11
Location: BRAZIL - Rio de Janeiro
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