开云体育

The Book David Wise is referring to regarding the 545A is called "Typical Oscilloscope Circuitry" copyright 1961 by Tektronix, Inc. It is hardcover and carries the Tek part number 070-253 (under the

Hi Craig, The reason I am ignorant of the "inductance standardizer" is that I have never wanted to calibrate an S-30. I have just used them as they were and trusted that the 300 uH position on the

Hello Joseph, I don't have anymore copies of the Tek First 40 Years book available for sale at this time. I find them around here in estate sales occasionally and put them on eBay when I get spares.

Hi folks I found this on eBay - 1680904344 and it looked kind of fascinating for those on the list who are interested in Tek history and lore from the Golden Age! Currently at $4 with no bids yet.

Yeah - that was my next line of advice. I'd run it the other way though; assume the cap is good, and then calculate the current from the ripple. The 6080's are good for 100mA per section - so does the

Aargh, remind me to read the whole thread next time. Dave Wise

Craig Sawyers [mailto:c.sawyers@...], answering Jose Gavila: <snip> I don't think that trouble in those resistors could account for a ripple. IIRC the purpose of the 82K is to prevent

Thanks for the pointers, Dave! If I can find these, they ought to get me bouncing in my seat :-) Actually, there is something out there that's close to an engineering analysis, but it mostly covers

I have a Tektronix 2246 100 MHz Oscilloscope powered this unit up and attempted to set the calibration. It indicates that it is trying to calibrate knob adjustment and to turn all knobs CW. I can't

Hello! Thanks to both of you... but my message was from September, I think, and the oscilloscope was fixed back then ;-) It was a capacitor, as you suggest. Merry Christmas! JOSE

Snips: I'm looking at the schematic of the 545A, and I suspect that the 545B has the same 350V supply. The (silicon) bridge rectifier feeds the 125uF reservoir capacitor through two ten-ohm 1W

Hello David, I'd be interested too. But in the meantime, there are some interesting chapters in a couple of books edited by Jim Williams: 'Analog Circuit Design : Art, Science and Personalities' and

Hi Stan and Miroslav I have a pdf of the 130LC manual which gives instructions on how to make the "inductance standardizer". This is used to calibrate the 300uH range of the S-30 transfer standard. It

Hello Stan, Classic". > I still have a few copies left for $24.95 I'm interested in getting a copy of your book. How much would it be including shipping to the U.K? I'd probably send an international

Looks like a problem with the power supply filter capacitor. wrote: ways to supply signal, load, a lower). This voltage the

Hi all, :) Just a note to say thanks to all who have responded on this thread. Kind regards, Michael Dunn (the other one)

I tried to read my copy once. Couldn't finish. It was too sanitized. It said exactly what management wanted it to say, namely, good things about managers. Yawn. I wanted engineering stuff and true

Hi. I`have a Tek 2246, However I don`t know how to do the calibration procedures to use time and volt cursor readings. When I trie to do, it says on the screen, TURN ALL VAR CW, I do so and nothing

Thanks Bill, your reply clarify things for me, as I said, it probably is an elementary question but I could not find any reference in my library. 73's Joe Orgnero VE7LBI

Hello stan, If you still have a copy of the Tek anniversary book available, I would like to order one. Let me know the cost of surface mailing to Canada. Thanks