[TowerTalk] WX0B SixPak ?

[Chuck Counselman]

Jim White, K4OJ, wrote:
>any consensyus as to a cure for relays that sometimes do not close....
>I would run the relays a little hotter if I knew where to find a 
>zener that would run just a little higher...I have a supply which 
>can supply > 12V for the box but the zener defeats that...

How about adding a capacitor to the relay-coil-driving circuit (and 
probably another diode or two, depending on the circuit) so that the 
voltage applied to the coil initially, to pull in the relay, is extra 
high; then, as the capacitor (dis)charges, the coil voltage drops to 
a lower value that is sufficient to hold the relay in, and doesn't 
dissipate too much power?

-Chuck, W1HIS