help with switching

Discussion in 'The Projects Forum' started by smith bond, Mar 14, 2008.

  1. smith bond

    Thread Starter New Member

    Mar 14, 2008
    2
    0
    dear friends, plz help me design a simple electronic switch which is ON if the input voltage is in the range of 1.5volts to 2.0 volts and turns OFF if the input supply not in the above range.
    thankyou.
    :)
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Although your request is somewhat similar, it's not quite the same as the O.P.'s original request. It is best to start a new thread in such circumstances.

    However, see the attached; one-half of an LM339 comparator IC is used, along with some resistors, a couple potentiometers, and a Zener diode.

    The inputs of the unused comparators should be connected to ground.
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
  4. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    What the Sarge has provided is called a "window comparator." Using that exact phrase in a search will turn up additional ideas.
     
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