please send me circuit diagram for sine wave inverter 1kva

Discussion in 'The Projects Forum' started by amoma, Jul 20, 2009.

  1. amoma

    Thread Starter New Member

    Jul 17, 2009
    4
    0
    please help me, i have build a transformer for 1kva 12v to 220v 50hz output, and i also build a circuit with transistor and resistor capacitor mosfect, the output give me 220v, but the problem is that circuit is not strong enough and whenever i connent it to load of 600W the voltage drop, so i cant used the load of 1kva and the output is making noise when i connent it to fan.

    mosfect IRFZ 250N
    Transistor npn c945
    resistor 5.6 k
    resistor 1k
    resistor 470 homs
    capacitor 50v 1uf

    please send me simple circuit diagram for sign wave,thanks
     
  2. dummhuman

    New Member

    May 11, 2009
    6
    0
    Could you please post a diagram of what you have built, and more clearly describe your circuit; I really would like to help, but a BOM is not enough. I would also like to know what your power source is, (what is driving the transformer?).
     
  3. knaaphix

    New Member

    Apr 1, 2009
    9
    0
    Could you please post a diagram of what you have built, and more clearly describe your circuit ?
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    We see requests for 1KW inverters all the time.

    Even if such an inverter were 100% efficient (which is impossible), it would require a constant 79 Ampere draw from a 12v automotive battery. That would completely drain a large military-type HTMF 120AH battery in about 1 1/2 hours.

    A simple sine wave inverter isn't even going to come close to 100% efficient. Not very likely that the output will be regulated, either.

    Somehow, many novices believe that all they need to do is download a simple sine wave inverter schematic from the Internet, throw it together in an hour or so, and run major appliances from it using a puny automotive battery.

    It's simply not realistic.
     
  5. amoma

    Thread Starter New Member

    Jul 17, 2009
    4
    0
    please send me circuit diagram for sign wave inverter 220v 1000W, i have build a transformer 12 volt input 220 volt output and i have also build a circuit useing transistor capacitor mosfect resistor and variable resistor, the output voltage was 220 volt but the problem is that the circuit is not strong enough, so when ever i connent load of 600W on it the voltage drop and the output is not smoot enough so it make noise.
     
  6. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
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