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Two Zener diode with parallel & reverrse connected to battery

Discussion in 'Electronic Basics' started by Joonhwan Lee, May 27, 2004.

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  1. Joonhwan Lee

    Joonhwan Lee Guest

    Hi. I'm a newbie to electronics.

    I have a interesting in zener diode that i think i can use it for
    low voltage cut off of my rechargeable lithium battery(3.6V working
    voltage).

    I thought zener works like a resistor of high impedence under 0.7V in
    forward
    direction. So, I connect two zener diodes parrel connect with
    different direction and one of its ends to my battery's (+) ve pin.

    |_
    |
    +----|>|----+
    | | |
    | - | |
    (1)---+ +---| |-------(2)
    | | |
    | |_ |
    | | |
    +----|<|----+
    |
    -


    But, it doesn't work the way I thought. What happen?

    The zener diode that i used is 1.0W-5.1V

    Thanks for your kind reply.
     
  2. Soeren

    Soeren Guest

    Hi Joonhwan,

    Sorry, but not in this way.

    The lower zener drops the voltage to (1) 0V7, while the other does
    nothing at all (assuming you do not charge the battery through it).

    When anti-paralleling zeners, they works just like if you used ordinary
    diodes.


    --
    Regards,
    Soeren

    * If it puzzles you dear... Reverse engineer *
    New forum: <URL:http://www.ElektronikTeknolog.dk/cgi-bin/SPEED/>
     
    M.Sridhar likes this.
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