Maybe its to prevent some surge when the supply is powered on. If so, it's a dumb way to do it.
The negative is through the rack (chassis ground) I would guess. I always run a negative directly, and don't rely on the rack, I think it would be poor practice to rely on the mounting of the front panel to provide a good connection. Its also poor practice to put the current meter on another deck, what happens when you want to use the power supply on something else? Brett N2DTS > John Coleman ARS WA5BXO wrote: > > It may be the only path to ground for the power supply and > measuring the > > voltage across it may be the way to measure current from > the power supply. > > > > A 10 ohm resistor with 1 volt measure across it represents > 100ma current. > > This is common practice for the way I measure power supply current. > > But there are no other connections to it or the metering > circuit. The > voltmeter has a 6 meg in series with the high voltage and the current > meter is in the RF deck. > > It just seems to lift the negative side of the HV off ground and it's > not clear where the negative side of the HV supply is that > goes to the > RF deck. > > I don't see what effect it would have as a short protection. > > > > BTW I found this really neat site with some good info on > power supplies > > http://www.qsl.net/i0jx/supply.html > > Thanks but it seems to only apply to full wave bridges so it does not > help me understand much. > > js > > -- > PHOTO OF THE WEEK: http://schmidling.com/pow.htm > Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver > http://schmidling.com > > ______________________________________________________________ > AMRadio mailing list > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Partner Website: http://www.amfone.net > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
