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phonic intermittance problem

Discussion in 'Electronic Basics' 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
    of electricity.
    i initialy tried to use an optocoupler, which i hoped would respond
    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 thanks for any help anyone could give.

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  3. Chris

    Chris Guest

    Hi, Benjamin. It kind of sounds like you''re looking for a "light
    organ", a devive which increases the intensity of a light output based
    on volume.

    You seem to be kind of casting around here -- why don't you try a
    simple kit like the Velleman "SIMPLE ONE CHANNEL LIGHT ORGAN" Order
    Code: MK110. You just attach the input side in parallel with your
    speaker, and attach the output side in series with a 120VAC or 240VAC
    lamp (1 amp max.).

    Velleman kits are available from many sources, and are relatively
    inexpensive. Here's a link to the Velleman page, as well as the

    Good luck
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