CurtPalme.com Home Theater Forum

km987654 · Posted: Mon Aug 04, 2008 12:03 pm Post subject: Measuring High Voltage

What brand and model meter would be suitable to measure 11KV or better??

I have been looking but have not found any.

Chuchuf · Joined: 11 Mar 2006 Posts: 548

Usually any quality DVM can be used to measure HV. To that you get a special HV proble.

Terry

garyfritz · Joined: 08 Apr 2006 Posts: 12088 Location: Fort Collins, CO

The probe steps the voltage down to a level that your normal DVM can read. So e.g. with a 1000:1 probe you can read 30kV and it only shows as 30V on your DVM.

**Curt Palme** · Posted: Mon Aug 04, 2008 1:54 pm Post subject:

I use this B&K probe. Good price here as well:

http://cgi.ebay.com/2-High-Voltage-test-Probes-B-K-HV-40-Pomona-2900_W0QQitemZ160266329353QQcmdZViewItem?hash=item160266329353&_trkparms=72%3A552|39%3A1|66%3A2|65%3A12&_trksid=p3286.c0.m14.l1318

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

Edit: Here is another one. The standalone ones like Curt posted are nice.

http://cgi.ebay.com/Fluke-80K-40-High-Voltage-HV-Probe_W0QQitemZ140254323774QQcmdZViewItem?hash=item140254323774&_trkparms=39%3A1%7C66%3A2%7C65%3A15&_trksid=p3286.c0.m14.l1318

km987654 · Posted: Mon Aug 04, 2008 10:06 pm Post subject:

OK thanks now I know what to look for. Missed that Auction Curt.

Are there tube testers and rejuvenators that should avoided?

**Curt Palme** · Posted: Tue Aug 05, 2008 1:30 am Post subject:

For front projection sets? ONly the Sencore 7000 seems to work with these tubes, but if the glass is cracked such as in your tubes, nothing will bring that back I'm afraid.

km987654 · Posted: Tue Aug 05, 2008 3:34 am Post subject:

Not sure where the cracked glass info came from. I have some tubes that would appear to have a short which is visible in the neck of the tube. I thought one of these units would be good to clear shorts.

**Curt Palme** · Posted: Tue Aug 05, 2008 1:49 pm Post subject:

If there's a bright glow in the neck, that means the glass has cracked somewhere on the tube, usually on the side of the tube. What you're seeing is the HV arcing in the neck of the tube.

km987654 · Posted: Tue Aug 05, 2008 10:08 pm Post subject:

So what are the symptoms when there is a short in a tube?