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
    pls i need circuit diagram of 1000W inverter
  2. chrisw1990

    Active Member

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


    Apr 5, 2008
  4. tom66

    Senior Member

    May 9, 2009
    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


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


    Feb 19, 2009
    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.