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They were called 'Blister Paks', and I bought a lot of useful parts from them over the years. Not everything was floor sweepings, so was leftovers from production lines. I bought things that I

Hello Mlynch, What you describe looks like a "geometry" or Y-AXIS misadjustment. If I understood correctly what's the equipment you have it's a T922 oscilloscope. Looking at the Manual that is

Dennis Even if your off 2 or 3 orders of magnitude the elephant is too big to bar-b-que -DC manuals@... -- Dave Manuals@... www.ArtekManuals.com

Hi John, As an former engineer I was taught to test my ideas with "back of the envelope calculations" before taking them to my boss. That way you I would get a sense of the scale of what I was going

Leo Esaki won the Nobel Prize, along with Ivar Giaevar and Josephon for Tunnelling phenomena. At least surface plasmons and Josephson Junctions are still in use today.

On 4/30/2018 3:14 PM, Chuck Harris wrote: <snip> > Radio Shack of the late 1960's was vastly more interesting then > it was in later years... but still no tunnel diodes. Hello-- The late (and not

On Mon, Apr 30, 2018 at 12:24 pm, Dale H. Cook wrote: I threw an led in there for now. somehow a white led+a green lens= blue. Should have used a bigger resistor. All I had are those super bright

Nope - Power switch front lower center on the TM504A, Also has IEC cable, fuse and voltage selector and FAN unlike the TM504

Darned fumble fingers. That, of course, should be CDPC (Common Design Parts Catalog). Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA http://plymouthcolony.net/starcity/radios/index.html

The 1982 Semiconductor CDPD (which also includes lamps) shows it as a CM2107. Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA http://plymouthcolony.net/starcity/radios/index.html

I read that manual from cover to cover, over and over again, as an information starved boy will. I was all ready to conquer the world with tunnel diodes, and went off to Radio Shack to buy some,

TM503 and TM504 have their power switches as pull tabs on the side of the front panel. TM503A has its power switch as a rocker switch on the rear panel. I would expect that the TM504A would simply

546 and 547 also available in Minneapolis Keith

Good call. Mouser has 10V 27mA.

"lop pol via Groups.Io" <the_infinite_penguin@...> wrote: ==================================================== Bulb part number 345 comes to mind. 6 Volt, 0.04 Amp, T1.75 Bulb,

Try Mouser. If you find the part that was used from the Tek manual or the common design parts document, it is possible to put that into a search on Mouser. I have purchased several lamps for my Tek

I think if I needed to do this, I'd seriously think about replacing with an LED and resistor. Craig

Thanx folks. Nope - never found any documentation on the TM504A but I do see them out on Ebay - it looks more modern then the other main frames in the series. Apparently is is quite rare indeed but

I just bought a TEK 922 for next to nothing, mainly for troubleshooting experience. It isa great looking little scope, just was not working. Someone had taken it apart to "Clean" the switches and

One of my 453s needs a trigger lamp. (150-0046-00) Looks like its 10V and 40mA. I see nothing on the auction site. What are you guys doing to replace those? Closest as I could find was 10V 60mA.