The Tek power supply thread reminded me of these interesting old books, some of which are still an excellent read.
Cheers
Phil Hobbs
I have most of those in print. I liked their beautiful hand-drawn schematic styles, some with tekdoodles.
The HP schematics were prim and boring.
Neither had discovered netnames.
The Sampling Oscilloscope Circuits one is also a very good read even today--the notion of the sampling loop, where you feed back the previously sampled value to reduce the size of the settling step, is still very useful.
Generally the cool thing about the old Tektronix was that they made fast, clean measurement tools using the same components everybody else had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp amplifier, maximum-power point biasing(*), distributed deflection tubes, and on and on.
Magic.
Cheers
Phil Hobbs
(*) As opposed to the modern approach, i.e. maximum PowerPoint. ;)
Their differential comparator plugins (Z, W, 1Asomething) were astounding. You could zoom the top of a 100 volt pulse to mV/div.
Here's the CRT from a 547:
This isn't as pretty. It's from the 519, the monster 1 GHz scope that had no vertical amp.
The horizontal deflection amp was a transmitting tube, a 2CX250 or something.
I wouldn't have wanted the guy who had to stand in the vacuum chamber adjusting those things before they put the envelopes on. ;)
Cheers
Phil Hobbs
I wonder how they tuned that delay line too. Maybe TDR in open air?
Los Alamos had racks full of their own custom 8-beam scope which they took Polaroids of to record many channels of a one-shot event. Before digitizers got good enough.
They also had an x-ray pulser, an L shape, two linear induction electron accelerators a quarter mile long each.
2CX250 would be a diode, AFAIK there is no such. I'd guess 4CX250A.
The Eimac transmitting tubes had plenty coded into the type marking: - 4: tetrode, - C: ceramic sleeve, instead of glass, - X: external anode - 250: max anode dissipation 250 W - A: first re-design version
That's probably it. The giant jug actually generates the sweep ramp.
Look at those specs!
I see one on sale for $4300.
The F version has different heater voltage, 26.5 V.
The tube is a smalish transmitting tube, 42 mmm dia by 47 mm high. For the giant jugs, start at 4CX35000, or glass tubes from 1 kW up.
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ?
Thanks. Very scientific.
Before you can call yourself a scientist you do have to have published a paper in a peer-reviewed sceintific journal and have seen it cited by somebody else.
I made it with my very first publication - which was a mere comment, back in 1972. It got cited by A T Young in Methods in Experimental Physics, in 1974.
I didn't know about the citation until Phil Hobbes pointed it out some thirty years later
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.