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230v-AC devices operates from car battery
230v-AC devices operates from car battery
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Old 8th November 2005, 06:01 AM   #1
redhorseaudio is offline redhorseaudio  India
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Default 230v-AC devices operates from car battery

Hi any one help me for operates AC devices from car battery for etc. mobile charger and dvd player or small tv
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Old 8th November 2005, 01:53 PM   #2
Perry Babin is offline Perry Babin  United States
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The device is called an inverter. Generally they are used only as a last resort because they are noisy (electrically).
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Old 8th November 2005, 03:09 PM   #3
Crazy-Stereo is offline Crazy-Stereo  Malaysia
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I only found the 12Vdc-120Vac power inverter schematic.

http://www.i4at.org/lib2/inverter.htm

Change the secondary winding maybe obtain the voltage of 230v.

I never try this circuit before.
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Old 9th November 2005, 11:09 AM   #4
redhorseaudio is offline redhorseaudio  India
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Quote:
Originally posted by Crazy-Stereo
I only found the 12Vdc-120Vac power inverter schematic.

http://www.i4at.org/lib2/inverter.htm

Change the secondary winding maybe obtain the voltage of 230v.

I never try this circuit before.

Thanks man but i wants a high frequecy's osc because of thats are always smaller than the lo (50Hz) freq. osc and i only needs just 230v 200mAmp so if you can help me please
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Old 9th November 2005, 02:19 PM   #5
Crazy-Stereo is offline Crazy-Stereo  Malaysia
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I've try to search the (higer osc frequency) inverter circuit but could't get it. I have no idea with this circuit. You may need other members from this forum for help.
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Old 9th November 2005, 06:31 PM   #6
Perry Babin is offline Perry Babin  United States
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An inverter typically generates a square wave or a sine wave at the same frequency as mains power in your area (50-60Hz). It has to use that frequency because that's what the transformer in the DVD player or TV was designed for. Higher frequencies driven directly into the transformer won't work. For example, if you drive a 20kHz square wave into the 50Hz transformer, very little power will be produced at the output of the transformer (not enough to run the device). The inductance required to run on 50Hz is too high of an impedance to the higher frequencies. If you want to use high frequencies to drive the transformer, you'd have to modulate them. This would be much more difficult to do.
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Old 9th November 2005, 07:42 PM   #7
pinkmouse is offline pinkmouse  Europe
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230v-AC devices operates from car battery
I hate to say it, but this sort of thing is much better to buy than make, the parts alone would likely cost more than the purchase price of a small inverter.
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Old 10th November 2005, 05:02 PM   #8
sagarverma is offline sagarverma  India
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Quote:
The device is called an inverter. Generally they are used only as a last resort because they are noisy (electrically).
i dunno what u got,new gen inverters are dammn quite.

a mosfet based inverter is silent.use this thing with inverter transformer.
http://sound.westhost.com/project89.htm

change rt and ct appropriately to toget 50hz
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Old 10th November 2005, 05:10 PM   #9
jan.didden is offline jan.didden  Europe
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1 - Buy a powerplate amp
2 - Build a 50Hz oscillator
3 - Use a transformer (mains) in reverse at the powerplate output to get your 50Hz 230V.

You realise that you are wasting probably 100watts or more to run a 5W device?

Jan Didden
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Old 11th November 2005, 02:34 PM   #10
sagarverma is offline sagarverma  India
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Quote:
Originally posted by janneman
1 - Buy a powerplate amp
2 - Build a 50Hz oscillator
3 - Use a transformer (mains) in reverse at the powerplate output to get your 50Hz 230V.

You realise that you are wasting probably 100watts or more to run a 5W device?

Jan Didden


this post is misleading as well as useless and serves no purpose.
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