low voltage cutout

Discussion in 'General Electronics Chat' started by freebz, Sep 16, 2008.

  1. freebz

    Thread Starter New Member

    Sep 16, 2008
    1
    0
    hi
    i'm looking to install a low voltage cutout to protect a 11.1v li poly battery in my RC car i believe the minimum safe voltage is 8.6v so if it cut out at 9v would be good ,the car draws 11A at full load. as i have limited knowledge in electronics an easy curcuit would be favorable. i was thinking of a transistor, zener diode system rather than using a standard relay and a zener diode because of the current needed to operate the relay.

    any help would be much appreciated

    thanks
    dave
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Look for comparator circuits in google with op-amps.

    Here is one i found

    http://home.cogeco.ca/~rpaisley4/Comparators.html

    There are thousands.
     
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