Tristated output to two common Base transistor issue


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  1. #31
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    Hi Bruce,

    Here are the results:


    When Tab is open the whole circuit uses 1mA.
    I have used 3 transistors BC558.

    Thank you!

    Best regards,

    Luciano

    P.S.

    Do not connect LEDs in parallel like that with just one series resistor!
    If you need to connect LEDs in parallel, use one resistor for each LED.

    This was just a quick test to see if 50mA were available.
    Last edited by Luciano; - 9th September 2007 at 21:34.

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