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I was going to say something similar; btw, I recently came across a polymer based material that is both magnetic and an insulator. Not sure how that was accomplished, maybe the iron particles where

Not quite correct. austenitic stainless (300 series) is non magnetic. Martensitic (eg 422, 440 and 17-4PH etc) and ferritic grades are magnetic. Hardened martensitic stainless is stronger than

Not having a 7K handy at the time, I am aware that Tek used to frequently use stainless steel in handles. It has reasonably good tensile strength. The TM500 power modules seem to have some sort of

http://welcolab.wixsite.com/discovery/16-tek-7-series-lcd

Hi Nenad, The trigger circuits inside the 7T11 and the S-53 are quite similar. One difference is that the 7T11 can also do "HF Sync", a kind of trigger count down. Another difference is the

Dennis Tillman posted a long description of what ge has done to help the 7T11 trigger; this was a week or so ago. DaveD Sent from a small flat thingy

Strange that nobody responded, summer vacations? I was really hoping to hear about this, I currently don't have the 7S11/7T11 but I'm considering getting them. What I do have is a 7S12 with S-4 and

Dave, I may have spoken too soon. I started to think more about the DC509/DP501 relationship and looked into a couple of other TM50x power modules I have here and was quite surprised to find that

Hi Chuck, Yes I'm curious, probably easy to do. Raymond

As the proud owner of both a 7904A and a 7104, I can attest to this concern. Fortunately, my HP 8664A sig gen provides the perfect spot for the 7104 to rest in the corner of my benches, where I don't

For a 7104, I'd think about carrying it from the bottom, but that said, I've never done it, nor have I ever heard of one of the 7K straps breaking (unlike the 500 series, which are mostly broken, or

Looking at your precise ripple values gives me the feeling that you simply measured them using the AC(RMS) function of your DVM. If that is the case, the true P-P ripple is more like 2.8 times the

Hi Raymond, I agree that C4403 needs to be investigated. It will be a week, or so, before I have any parts in hand to try. C4403's intended purpose is to make moving changes to the focus as the

Hi, there is a peculiar property with emitter followers and FET source followers. Under some circumstances they will provide a negative input impedance. This with a certain source impedance will start

Thanks for the reply, Chuck! Here are the power supply voltages and ripples, as measured at J119: -15 measures -15.001 V with 0.99 mV of ripple +5 measures +4.991 V with 33.86 mV of ripple -15 UNREG

There are a lot of retired Tek, HPAK and other T&M company employees on these lists who doubtless know others who are not on the lists. Do you have or know people who might have unreleased

I wish it were so simple as a ground lead. If you put the probe tip on the scope calibration ground, it still oscillates. I tried all of the combinations of direct leadless ground connections to the

table. And every time I get shivers in my feet. Nenad Well with age of any metal I would be concerned. At 46+ lbs. The one I used to own was on a Tek cart. Which saved my Back and Feet. I think

Well I suppose this sounds silly, but I just can't get over it. This thin metal sheet inside the handle is surely tough, high tensile strength steel, but somehow subjectively it doesn't nearly impress

https://m.youtube.com/watch?v=9lmAQUjs_cE - This link has some tips on TDS 460 power supply repair. You may find them useful. https://m.youtube.com/watch?v=pffOJdCQ7kw - This is a tutorial on SMPS