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I’m curious: which Tek scope used compactrons? Cheers Tom Sent from an iThing; please forgive the typos and brevity

I like the ideas about the anti static heel straps. How can one check the direction of ESD? How to find out if it's me being charged, or the furniture? <CCDman1@...> wrote:

That is HEEL of course

There are anti-static heal straps available. Working with $200k CCD's I'd wear one all day just in case I might forget the wrist strap when coming back from the loo.

OK, I'll try to post again. Try a simple experiment by wrapping a small damp rag around one of your shoes, and secure it with duct tape. Then wander around with the cart and see what happens. This

Help!? I am looking for a 6C10 tube. 73, Bill, WA2DVUCape May, NJ

I just wrote a reply that then disappeared. I've been seeing strange behavior since the recent "upgrades" were done in groups io. And WTH is "RSS feed?" Ed

It's been like this for at least a year (probably much longer) and the staff and other patrons are experiencing shocks too. No one gives a crap It's any time of the day There aren't any other

I suggest a casual investigation to learn from the employees what they might be experiencing. Do not jump to conclusions with a solution or lead them. Just ask if they are experiencing electric

I would investigate that supermarket for proper facility grounding using my Biddle Megger Earth Tester, model 250260. I use it for testing radio station facilities where proper grounding can be vital.

Hi all, I frequent a large grocery market nearby and inevitably every time I go there I get electrical shocks. I walk around with a cart and often if I touch a metal fixture (fridge, mesh rack) I get

When I wound up with the 561 from my dad's company, 30 years ago, it had a replacement filament transformer. I discovered that, in fact, the problem was a breakdown in the filament winding, not a

I'm assuming the failed FET is in a metal can, if so the failure could be tin whiskers. Several cures have been discussed in TekScopes recently. The simplest was to rap the can to mechanically

The vert front ends are 8393 Nuvistors and they are enclosed in a metal shield at the front of the scope. Hoping that will be enough, have to wait for the transformer to know for sure. ChuckA

"Other circuitry" is a risk too. The field can induce voltages in nearby wiring, so you want to stay away from the amplifier front-ends. I had trouble with this when I was modifying a 500-series

Yep, Gonna mount it on the opposite side of the CRT, full metal plate between them. Have a oversize temp transformer there now with no issues. ChuckA

I've got a older 155 analog voltmeter. My favorite analog bench voltmeter. 1 microvolt to 1000 volt full scale, zero center, battery powered. Unfortunately, one of the chopper fets in the input

Before you drill mounting holes, experiment with orientation in case the field gets into the CRT or other circuitry. Dave Wise ________________________________ Sent: Friday, May 3, 2024 9:30 PM To:

I have a 179 bench DMM also. I usually leave it running because I'm always using it to check this and that. I also have a 147 Nanovolt Null Detector. After I capacitor-discharge welded all the crimp

I have some Keithley too: some 7001 fresh refurbished by me and waiting for any hand-made board :) And Keithley 230 (not sure regarding working). I switched it on about a 15 years ago. Peter сб, 4