[Milsurplus] contact cleaners; vibrator contacts*

[Al Klase]

Marty R's GI-stuff haunt wrote:
> Lotta talk about contact balms & folk rfemedies
> 
> Anyone ever try "re-whetting" contacts?  This by disconnecting delicate
> stuff like meters & coils then using contacts to turn a 110V 200W
> light on & off a few times.
> 

I've had a good success rate waking up old vibrators with 
the 117VAC + lightbulb.  (About 7 for 7 currently)  Of 
course, it's not going to fix a unit with a lot of hours on 
it, or one that's suffered damage from running in a faulty 
circuit.  (A bad or missing "buffer" cap, the high-voltage 
one across the HV secondary, will cause the points to burn 
in short order.  Replace it out of hand.)  I'd only open up 
a vibrator as a last resort.  I'd most likely cobble up some 
solid state widget first.

My two cents,
Al

-- 
Al Klase - N3FRQ
skywaves@bw.webex.net
Flemington, NJ 08822
Web Page:  http://www.webex.net/~skywaves/home.htm