Bistable Multivibrator SR Latch

Discussion in 'General Electronics Chat' started by Livingwaters, Mar 4, 2008.

  1. Livingwaters

    Thread Starter Member

    Mar 4, 2008
    Hello Group,

    I am new to this site. Please help me find this Multivibrator.

    I need a Bistable SR Latching Multivibrator which can handle, through the inducters- 110 Volts AC @ 20 amps.

    The switching points....bypassing the coils (Inducters), must withstand app. 34,000 volts at 0.83 Amps.

    Any ideas where I can buy some of these?

    Thanks In Advance!
    Livingwaters :)
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    Surely you mean some kind of mechanical switch gear? Why are there inductors involved?

    Please post up a circuit - this is just hard to envision. S-R latches like 74LS279's are logic ic's that handle 5 volts DC at a few milliamps. Your 20 amp current would need a relay to switch it.
  3. scubasteve_911

    Senior Member

    Dec 27, 2007
  4. Livingwaters

    Thread Starter Member

    Mar 4, 2008
    Hi Beenthere,

    The multivibrator we need was used in an old Air Conditioning system from app. 1949. So, it had contactors, but was a multivibrator 2 coil unit. Actually an S1r bistable latching multivibrator.

    The HV will bypass the coils and ride along the exterior circuit.

    Any ideas where I can find one of these antiques??