I have the gun from a HP 85662 display unit (just the neck) that has nothad filament voltage applied in air. It's yours for the shipping. This tube has a very fine beam and it had a mesh (removed).

Hi "D"..I will try my best . Since the dot must be small than "pixel" you like to scan, you need a final lens to focused it on "surface" (not a point)target since we are talk about scanning.. In my

Klkplo

If it hurts then stop doing it. Word suffers from feature bloat, most of us don't need all that stuff to write a letter to the editor or an essay for physics class. -- Richard Loken VE6BSV, Unix

Does anyone have one of these for sale, or know of any dealers selling one for a reasonable price? Please reply to me directly, thanks.

Replying to my own post. OK, the order of the memory controllers from left to right with the scope upside down and the BNCs facing you is 4, 2, 3, 1. CH4 mem controller is U100 and memory chips are

The photo you uploaded looks like the retrace is visible as well so the brightness which is controlled by GRID No. 1 on the CRT is getting stuck high. That is a common symptom of a bad DC restorer

Found them. A classic case of sleep on it and then look in the morning. 2 minutes later....

----- Messaggio inoltrato ----- Da: Alessandro Cattaneo A: "tekscopes@..." Inviato: Sabato 18 Maggio 2013 15:22 Oggetto: Tek 2465B bright dots Hi, I forgot to say that when the defect

----- Messaggio inoltrato ----- Da: Alessandro Cattaneo A: "tekscopes@..." Inviato: Sabato 18 Maggio 2013 14:56 Oggetto: Tek 2465B bright dots Hi, my Tek 2465B works properly, but after a

Hi Gabriel, can you tell me what a magnetical prefereble is? Is there a place that explains it? Cheers, D. <iglesia_cristiana_arpas_eternas@...> wrote:

Hi Julian, I am glad to see you are making good (further use) of your 575. We just had that topic some months ago. I'd say give the search function a try and it shall come up with

Okay, mea culpa. In my defense, I did say I was a bit dense. I just realized what I thought were circuit traces were the board edges... Doh! Mark

Hi Andy, Nice job. For future reference, I don't think the memory controllers and SRAM chips are laid out in order 4, 3, 2, 1 from left to right of the ACQ board (with the scope upside down and the

It was indeed. I have an early one and a late one and they are both very nice scopes. The later one has a much more elaborate power supply control system than the early one. Both work quite well

I am working on a TDS 784D, Serial # B010510 I have removed and installed a new CRT/LCD Shutter assembly and now need to adjust the display. The manual I have tells me to set the dip switches closed

VR635 Zener, fed through R636 from the +15 volt supply. The Zener is shown as 5.1 V on the schematic. (Trigger Pickoff and Generator) P 181 of the manual at w140.com/tektronix_434_service.pdf near

I'm no expert on electron microscopes but you should be aware of two types, TEM (Transmission Electron Microscopes) and SEM (Scanning Electron Microscopes). A TEM shines a beam of electrons

Hi Damian,Here my two cent about: You need to put an extra objective lens "magnetical prefereble" in order to obtain a very small dot at least half what minimum size yo like to see.and ..or..

Maybe an image orthicon rather than a vidicon? They have an electron multiplier as part of the tube. I think you might find one to try but I hope there aren't too many IOs destroyed for the