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Square Wave Power Inverter and Magnetic Induction question

Discussion in 'Misc Electronics' started by Lory, Jun 1, 2005.

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  1. Lory

    Lory Guest

    Hi,

    I got this 12 volts square wave power inverter. I heard
    that if you put an LC passive filter in the output. It can
    convert to sine wave. What is this LC passive filter
    mean?? What value must I get? My inverter is 150 watts.

    Another thing. My transformer is 12-0-12 to 110 volts.
    What is the minimum frequency before the magnetic
    field can no longer cause induction in the secondary??
    For example. If the 12 volts ac runs at 3 Hz. Can
    it induce the current at the secondary?

    What is the explanation again why transformer can
    induce current inbetween primary and secondary with
    no physical contact between them? I mean.. I know
    that if you rotate a magnet, it can induce current
    in the wire around it. But in transformer, what's
    the principle. Thanks.

    Lory
     
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