circuit diagram for 1000 W inverter wanted

Discussion in 'General Electronics Chat' started by sunny4, Oct 25, 2011.

  1. sunny4

    Thread Starter New Member

    Oct 22, 2011
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    pls i need circuit diagram of 1000W inverter
     
  2. chrisw1990

    Active Member

    Oct 22, 2011
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    hes not doing the work, hes doing the pcb layout
     
  3. bertus

    Administrator

    Apr 5, 2008
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  4. tom66

    Senior Member

    May 9, 2009
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    Have you even considered the work involved in making one?

    I thought about making a 1800W inverter, but I gave up after 5 minutes - simply because it would be beyond my ability.

    At the very least you need to think about:
    - What topology to use:
    --- Whether or not to go for a high voltage (~320V) h-bridge design, a split secondary design with half h-bridge (push/pull), or a low frequency step-up transformer.
    --- If using a high voltage h-bridge or half h-bridge design, consider SMPS topology, HV isolation (optical/galvanic), efficiency, RFI/EMI...
    - Input capacitors.
    - Modified square wave, square wave or true sine?
    - Cooling (90% efficiency? Getting rid of 100W is tricky.)
    - Wiring/PCB layout
    - Fuses on the input. (A 120A fuse is EXPENSIVE.)

    A 1000W inverter is reasonably cheap too - weigh in your time.
     
  5. tgotwalt1158

    Member

    Feb 28, 2011
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    Here is one circuit but image is not very good. Any way, at least you will have some idea!
     
  6. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    The decent 1000W and 1500W inverters I've had and/or fixed use a bank of MOSFETs each with their own transformer to supply the output current needed.

    For 1000W, you will be looking at a 200 Amp draw from a 12-14V source after losses. 200 Amps means very large cabling and wide/thick PCB Traces.

    It would be much easier to purchase one than attempt to build one using a single step up transformer, especially when working with over 100 Watt output. Even when building a 150W or so output, the amount of money spent on parts and enclosure is more than purchasing a small one costs ($25).

    Keep that in mind before buying parts.
     
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