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uv led meter strobe

Discussion in 'LEDs and Optoelectronics' started by bpatton, Jul 17, 2012.

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  1. bpatton


    Jul 17, 2012
    hey, im thinking about makeing a strobe type light that uses a led vu meter and isnted as one of the top led's i want to have a transistor that wil turn a large led strop on and off. will this even work? ist there a better way to do it? has anyone tryed anything like this before.

    any help would be much apreciated, thank you very much
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    Instead of the transistor use a photocoupler to trigger the strobe light. This gives you isolation and you won't have to hazzle with the (probably) different potentials of the VU-meter and the strobe.
    You insert the LED of the photocoupler just like all the other LEDs into the VU-meter circuit. The transistor on the other side of the photocoupler will be off if the LED is off. If the LED is on, the transistor is on, too.

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