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468 can't have a DM44, but the cover should fit just fine. -ls- Kevin Berlen <kberlen@...> wrote:

Oops, I realized that a couple of minutes after posting. You would have to use a negative resistor :)

I need to know if a cover for a 468 will fit on a 465B. both scopes appear to have the DM44 option. Thanks, Kevin

I don't think you can get there that way. The coding ring resistors add orders of magnitude of attenuation. He wants to move it the other direction. -ls- David DiGiacomo <daviddigiacomo@...>

<branadic@...> wrote: I think the readout scale factors only go up to 100X, but you can connect a pot or decade box from the probe coding ring to ground, and see for yourself.

It was scanned by Al Kossow, but I have it available also: http://www.slack.com/concepts.html

Nice walk down memory lane, Michael

Enjoy. http://w140.com/tek_new_products_march_1972.pdf -Kurt

I'm trying to get a very early 453 (IBM) working. It came with no mains lead,(3-pin round socket) and one of the input Nuvistors (8393) seems to be dead. If anyone happens to have either item in their

I have had sometime to check out the LD110ACJ and LD111ACJ as well as the LD121ACJ I did not check out every chip as there was no reason to. ?All the chips were the correct part and worked in every

YES! ? Unfortunately, the pictures aren't there, and I can't seem to be able to find Part Two on how to modify the 576 for the job. ? Thank's a lot, ? Jim

Jim, Let me know if this works.... http://dl.dropbox.com/u/27593700/Testing_Vacuum_Tubes_with_a_Tek576.pdf glydeck@...

It seems that at least the first two pictures use the same sweep knob setting, 5 us/div. Also all 4 pictures seem to show the same distortion, a square wave like distortion, synchronous to the

Actually, I found that photo on a forum. ? I'll try to find it again and contact the guy. ? I couldn't figure it out either, unless he rewired the CRT!

Is there noone with an idea of how vertical scale indicator can be superposed by an external scale indicator? branadic

Hello Fabio, there was a discussion in a german forum about UWB-Signals: http://www.mikrocontroller.net/topic/schaltung-zur-erzeugung-von-uwb-signal At the nearly end there are some simulations to the

Jim, What did you do to create that screen shot you labeled "Backwards" of the vacuum tube curves that you uploaded to the 576 Curve Tracer album. I have tried several ways in my head to figure out

Hi Mark, Get yourself a copy of the Tektronix Measurement and Concepts Series book called Semiconductor Device Measurements. You can find it on ebay often for ~$10 if you are patient. It probably can

Hi, ? I've used them a couple of times to get hard to get or discontinued parts. The last time that I used them, I got a discontinued part from them. I was completely paranoid about ordering from

Hello Mark, it is not needed that they all are isolated ! For example, the protective ground comes into your back side mains connector, and normaly is right there connected to chassis ground. There