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  1. #1
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    Quote Originally Posted by Acetronics
    Hi

    Why not use a simple regulator with Enable pin ??? ( i.e LM 2941 ...)

    Alain
    Because at least 300uA is needed when in OFF state!

    Still the previous circuit with an PNP like BC557 or BC856/7/8 is the #1.

    Ioannis

  2. #2
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    Wink and, moreover saying "papa and mamma" ...

    Ioannis,

    this was an Example .... have a look to other brands too ( Micrel 29xxx ( 1µA ) ... etc, etc ).

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

  3. #3
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    Hi Alain. No offense :-)


    300 uA or even 1uA might on some cases be too much. With the BC857 that I mentioned I could not measure the leakage current with the Fluke 179 multimeter (as voltage across a R).

    Ioannis

    P.S. On the real circuit, note that the PCB has to be cleared from solder because the leak may be more than the electronics in some cases!

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