[Milsurplus] Command Set Transmitter Keying

[Mike Morrow]

> Wouldn't a reverse biased diode across the coil "kill" the back emf?

Yes, it would...it's a very common application of diodes to kill inductive
switching spikes across *switches* to coils and solenoids.

I, however, would want to attempt to resolve the problem using components
contemporary with the equipment...in this case, a resistor.

But, anything that creates a current path through the relay coils, be
it a reversed-biased diode or the resistor I'm so enthusiastic about
trying, can actually cause more delay in relay drop out that is a function
of the the RL circuit that is created (R is equal to the coil resistance
and swamping resistance, L is inductance of the relay coil).

So, my resistor or your diode could likely make things worse.  I'd just
like to see it tried...six relays in parallel creates a complex situation,
and all we'd need is a drop in K52 drop out time relative to the K55
relay.

Mike / KK5F