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 12/120V inverter again		  New Topic  Reply to Topic
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audioguru
Nobel Prize Winner

Canada
3934 Posts
Posted - Jul 04 2007 :  4:10:04 PM  Show Profile  Reply with Quote
Most Mosfets turn on when their gate is 10V or a little more higher than their source voltage. They turn off when their gate voltage is the same as their source voltage.
For a low frequency square-wave inverter two Mosfets can be driven by a CD4047 Cmos oscillator.
For high frequency pulse-width-modulation for motor speed control then a Mosfet driver IC should be used to quickly charge and discharge the high gate capacitance of the Mosfets, and to provide dead-time so that one Mosfet is off when the other turns on.
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mansoorkkl
Apprentece

India
5 Posts
Posted - Jul 22 2007 :  09:08:17 AM  Show Profile  Reply with Quote
[quote]Originally posted by essien

pls i want a circuit diagram for a 2000 W inverter[12vdc to 230/240vac]
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mansoorkkl
Apprentece

India
5 Posts
Posted - Jul 22 2007 :  09:21:37 AM  Show Profile  Reply with Quote

pls give me a simple low cost circuit diagram for a 2000 W inverter
[12vdc to 220/230/240vac]
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audioguru
Nobel Prize Winner

Canada
3934 Posts
Posted - Jul 22 2007 :  09:22:34 AM  Show Profile  Reply with Quote
A 2000W square-wave inverter will dissipate about 400W of heat.
It will draw 200A continuously from a 12V battery at full load which will cause it to explode.
You will need many output transistors, a huge and expensive custom-made transformer and a bus full of car batteries that will take a week to charge.
Rediculous.

Some 2000W inverters operate from 48VDC then four car batteries in series last a few hours.
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mansoorkkl
Apprentece

India
5 Posts
Posted - Jul 22 2007 :  09:28:19 AM  Show Profile  Reply with Quote

pls give me a simple low cost circuit diagram for a 1000 W inverter
[12vdc to 220/230/240vac]
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Aaron Cake
Administrator

Canada
6000 Posts
Posted - Jul 22 2007 :  10:09:00 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
quote:
Originally posted by mansoorkkl


pls give me a simple low cost circuit diagram for a 1000 W inverter
[12vdc to 220/230/240vac]


Please actually read the topic before you post. This has been covered several times.

There will be no low cost circuit. Designing a 1KW inverter is nontrivial. The drive silicone will be very expensive and the transformer very large.
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tim
Mad Scientist

198 Posts
Posted - Jul 25 2007 :  2:57:27 PM  Show Profile  Reply with Quote
well there is 12,000 watt inverters on ebay for 600.00 all you got to do is get a few 8-D batterys and there you go.
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srimovva
New Member

India
1 Posts
Posted - Jul 28 2007 :  09:05:55 AM  Show Profile  Reply with Quote
quote:
Originally posted by phoenix

HEY! Thanks 4 the advice...


T-boss
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newjazzy2005
Apprentece

5 Posts
Posted - Jul 28 2007 :  12:36:15 PM  Show Profile  Reply with Quote
please i need an inverter circuit schmatic diagram that wiil give 220vac voitage and it input will be 12 or 24 vdc and wiil be able to last for 2 hour thanks
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audioguru
Nobel Prize Winner

Canada
3934 Posts
Posted - Jul 28 2007 :  4:17:50 PM  Show Profile  Reply with Quote
Any inverter will last for 2 hours or more if its battery is big and its load current is low.
I can buy a amall 75W inverter for a low price. A car battery will last 10 hours powering it if it has a 75W load.
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mansoorkkl
Apprentece

India
5 Posts
Posted - Jul 31 2007 :  12:15:41 PM  Show Profile  Reply with Quote
I need 12VDC To 220VAC 1000W To 1500W Invertor Pls Send Me Diagram And All Detail
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audioguru
Nobel Prize Winner

Canada
3934 Posts
Posted - Jul 31 2007 :  1:47:07 PM  Show Profile  Reply with Quote
The current in the output transistors and from the battery will be 150A if the load on a 12V inverter is 1500W. A big car battery will explode. The transformer will be huge and will cost a fortune. Many transistirs will be needed.
Rediculous.
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Aaron Cake
Administrator

Canada
6000 Posts
Posted - Aug 02 2007 :  09:56:11 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
I think it may be time to close this topic? Every possible inverter question has been asked and answered multiple times.
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audioguru
Nobel Prize Winner

Canada
3934 Posts
Posted - Aug 02 2007 :  09:59:37 AM  Show Profile  Reply with Quote
Most questions about high power inverters are coming from countries without electricity.
Where do they charge the battery?
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Aaron Cake
Administrator

Canada
6000 Posts
Posted - Aug 04 2007 :  10:36:39 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
My guess would be wind, solar, treadmill, etc.

But I wonder where they get the parts?
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