Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> At 06:52 PM 2/1/2006, Tesla list wrote:
Original poster: FIFTYGUY@xxxxxxxIn a message dated 2/1/06 2:46:22 PM Eastern Standard Time, tesla@xxxxxxxxxx writes:>I have it wired so that you apply power to open >the shorting shunt, and, when that relay is OPEN, >it triggers a microswitch, which then allows you >to apply power to the HV transformer with a >momentary contact type latching circuit. I like your setup, Jim. Good failsafe features, and simple to implement.
One of those experimentally arrived at things. The bad ways reveal themselves spectacularly when you're using HV and lots of stored energy. Oh well...
diodes aren't all that expensive (maybe a series resistor isn't a bad idea),I was standing far enough away when the safety shorting relay closed (hmm.. put the relay on the other side of the resistor, and it doesn't go BANG) "what's that horrible burning smell". (maybe a check that the variac is at zero before applying power might be a good idea)
The third or fourth time, I actually sat down and figured out what sequence made sense (reading a bunch of manuals for HV power supplies helped, too... they've had the same problems).
-Phil LaBudde