开云体育

Or an alternate album cover photo for The Who's Who Are You album!? ? ? ? ? ? ? ?Jim Ford?Sent from my Verizon, Samsung Galaxy smartphone

I thought the guys were just checking the audio system for a KISS concert!

I had dismissed the notion that this was picture of a vacuum tube computer when I first saw the image, partly because of the description of the contents of the book ("How the Microchip is Changing Our

I have now examined several 7000-series plug-ins as well, and they do not appear to be beveled either, nor do they show obvious signed of being "rolled". I'm not saying that this was not done, just

With the price of NIB 5642's going for around $5 on that auction site, why bother with Solid State devices ? 73, Dick, W1KSZ ________________________________ Sent: Wednesday, July 28, 2021 10:00 AM

Oh, it's off to the right.? Had to scroll over there.? Yep, it looks just like an SS-5706.? (Now, where is that face-palm emoji when I need it?)? ? ? ? ?JimSent from my Verizon, Samsung Galaxy

Well, the SS-5706A I saw online looked like one of my old Iwatsus on steroids! I didn't catch anything like that in Carsten's photo, but then I'm viewing it on a tiny smartphone screen.? Oh well.Sent

Did you look online at any pics of the SS-5706? Looks like a pretty close match to me. -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070

Hmmm, I'm not seeing anything that looks like any of the Iwatsu scopes I'm familiar with.? I used to have 3 of them; can't remember model numbers, but they did have 60, 100, and 250 MHz bandwidths.?

I bought a reel of 5000 - Vishay HER105-T High Efficiency 400V 1A DO41 Diodes, a couple years ago for under $23.

I see that, thanks - I'm going to take a look at the schmitt trigger input circuitry with diode clamps you use and experiment some. Need to look at the trade-offs between the two approaches, I always

A series string of UF4007s with a 10kV breakdown voltage would have of the order of 1pF capacitance.? The problem with 1N4007s is with their slow reverse recovery (hence the UF4007 recommendation).

OK, I managed to scan my old readout exerciser schematic, posted here: /g/TekScopes/album?id=266548 Now I'm remembering some details. I had to do some tricks to skip certain parts of

Offhand, I'd say that it is an Iwatsu, maybe an SS-5706. Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070 http://www-smirc.stanford.edu

The idea of replacing tube rectifiers in TVs and other CRT devices is an old one. One of the most important considerations is the capacitance of the reverse biased diode. The higher the current

My brain tells me that I saw Hamegs in the rack when I visited seven years ago. My picture at https://tzi.de/~cabo/IMG_1822.JPG is not clear enough to read what’s on the scope in the rack; it

Yep. 1N400x devices are very slow to turn off; they are charge sponges that rectify as a side effect. UF4007s would be a much better choice. As to equalizing networks (R and/or C), if the individual

The following photos have been uploaded to the 7K readout exerciser ( /g/TekScopes/album?id=266548 ) album of the [email protected] group. * 7K RO tester.BMP (

It appears that the high voltage power supply runs at ~60kHz. I wouldn't trust a garden variety silicon diode like 1N400x to hack it. Fast recovery diodes might be OK but you might need to take

Absolutely! Silicon HV rectifiers beyond a kV or so are actually made of series strings of lower-voltage units. A clue is their much higher forward voltages (which makes them difficult to test with