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phonic intermittance

Discussion in 'Electronic Design' started by [email protected], Apr 18, 2007.

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  1. Guest

    i am having problems building a device to interupt a high voltage flow
    of electricity.
    i initialy tried to use an optocoupler, which i hoped would respond to
    an audio current as input - interupting the high voltage flow as the
    frequency of the audio current increeses and dwindles.

    however the optocoupler did not respond with any variation. it was
    simply on/of in responce to a complete cercuit on the input -
    regrdless of any current in the input cercuit.

    alternatively i am looking at this sound operted switch

    but can not understand which components i should buy.

    basicaly what i want to do is have sound (as electricity) produce
    quantitive variation in light (rather than sound).

    many thnks for any help anyone could give.

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