I have found, a couple of short circuited zoner diodes on my 475. They are gold plated and fit into sockets on the triggrer Z axis board, both anodes to ground. They are marked GE 0386, but I don’t

What could be a good compromise is a 5 minute delay on the emails going out after the 'reply to group' button is clicked. In that 5 minute window, an edit button could be available, but once 5 minutes

My 2 cents worth: Let the the administrator choose whatever option is the easiest to manage. I am very thankful for all the effort put into keeping this group going smoothly and would not want to add

Mods please step in in both groups, meta thread needs to end. > > >

Advantages of using an email reader: sorting emails into buckets by list name killing messages from certain senders and with certain subject words ease of response to individuals off list. search

In forums when posting, it helps me to read (and sometimes to re-read) my own message with the PREVIEW feature and that usually allows to catch any required corrections or changes before the message

Hi Jeff: Well... in his video... he cleared the short by washing out the socket on the cable where the probe tip screws in... with a brush soaked in alcohol. Did you watch the video? Maybe it's not a

The voltage across C640 is close enough to normal as is the parallel combination of R646/647. But something doesn't make sense. The 5651 is a voltage reference tube that should be at a constant 85-86

Hi Chris, ---- These voltages are OK. Once all the issues are fixed calibration will make them more accurate. R110 (frequency control) pot seems to not stop at the end and continue past the

Could I perhaps suggest a short trial. Maybe just 2^9 hours. Then ask again to see if the "No" team might have some members change to "Oh alright then".

Ah, the lag; that's why I am not interested in a 2465. I had one several decades ago at work, and it drove me nuts. No, you're not ridiculously picky, unless we both are! 7000 series for me, thank

C640 has 272V across it in mine. The 5651 has -172V across it. The R646/647 pair reads as 498.8Ohm measuring from node to node. I didn't desolder them to check as maybe I'm just blind but they were

Yes, the PV MOSFET drivers should work great as current sources, with plenty of voltage - you would just have to shunt regulate them with LEDs. Only a single PV would be needed for each channel. Don't

ESD?

I'm sure I've seen it too. A kind of mild staining? ... in some areas. It could be, as suggested, and exposure to uv... but, that usually happens when the anodized part is colored. I don't think there

Miguel, According to the TekWiki entry on the P6139 the cables have "a whisker- or dendrite-growth problem," the fix for which is to replace the cable. There is a temporary fix that involves running

Roger, Well, first, the original discussions (blog posts?) by Ed did talk about using an opto-isolator to generate the bias voltage. If I recall the post correctly, the only reason he went with LEDs

I would like to second that, for my two reasons: - Never change a running system for trifles - Errors, typos and such are no big deal, science has ever been able to overcome For me fake news (not in

Jeff, Sorry I'm more than a little late to this party but I have to ask: since you need an isolated bias supply, one which needs to deliver little current, and for an application reasonably tolerant

Well... I watched the video... and I see you cleaned out the "socket" (on the end of the probe's coax), where the probe tip screws in.... you used alcohol. Initially... you got a resistance of 0.14229