[Amps] Vacuum Relay Contact Bounce

[2]

>Vacuum Relay contact Bounce.
>-
>A year or two back, I used the RJ1A, the HC-1 and 
>a few larger vacuum relays in a research project. 
>=
>Although these relays established contact transfer 
>in the reported < 2ms time, there was considerable 
>contact bounce. 
>-
>Contact bounce made the tested relays unusable 
>for at least a few milliseconds. The best I could 
>get from the HC-1 was ~4 ms without repeated 
>contact bounce.  I consider the 1.5ms speed to 
>be a little to optimistic. 
>-
**  Using 120VDC, and a series-R to limit I to 80mA, a 26v HC-1 or RJ1A 
will make and stop bouncing its NO contacts in 1.8mS.  Using a 26v PS, 
the measured speeds were 6 - 7 mS.  


Rich, AG6K, 805-386-3734, www.vcnet.com/measures