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

 

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.

 

What sort of timing are you dealing with? If it isn't critical, I suggest using standard EM relays or even solid state. Then, setup the relay logic as

http://www.allaboutcircuits.com/vol_4/chpt_10/2.html

Is your load inductive? Please elaborate.

Steve

 

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??

Thanks,
Livingwaters