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An active probe with hi-Z inputs and an amplifier to provide a 50 ohm output isn't cheap. For the 1S1, I have the P6032 but it's only 850MHz and the plastics degrade quickly and STINK. Then there's

I just did a little searching for fast probes that match 50 ohm (sampling) inputs. The table on Tekwiki shows only P6150 or P6156 would have the necessary speed. But on ebay the prices are an

I had an FG 507 and a FG 501A both had very bizarre issues with them and the waveforms were terrible and would some times collapse to DC. I would recommend before you go down the rabbit hole too far

Thanks for the suggestions for the Xcelite handles! I will try them out. I did try an “antifungal” treatment that worked for a while, but the white cast came back. On batteries - I now use

Q292C is connected to the diode bridge CR245/CR248/CR250/CR246. With 1.116V at CR245 cathode (and CR248 anode), CR245 should be off, CR248 should be on, CR246 should be on, CR250 should be off (this

For Mark, I do not say it's not possible, but I believe no capacitor will warm up in a minute. Plus, there are conditions when it starts right-away (lower/higher frequencies). There are (usually) two

I mostly had problems with aa and aaa cells. The bad AA cells had two dots on the bottom.? These leaked when brand new.? Duracell stopped making them for a while . The current crop seem to be

Individual responses to butyric acids vary... it's in US chocolate (highest in Hershey's I think), so Europeans have been known to comment that it smells like vomit to them. Not to me! I also have a

Hi Ken Here's a second vote for energizers and a bunch of thumbs down for Duracell regarding corrosion. The only good news about Duracell "corrosion" on cell contacts is that CLR cleaner makes it

Ages ago, several of my Xcelite tools developed the whitish handle disease. I figured, at the time, that it was fungus and applied my standard lo-tech fungus treatment - vinegar. It did the trick.

I've had the same white fuzz on tools as well.? In fact, my first Xcelite tool kit was odorous out of the box and I've seen the fuzz on a lot of stuff (Craftsman screwdriver, for instance). On the

"Yes my TEAC X-3 just had a "belt melt", it is hard ti understand why they can't be made in silicone rubber now. That should be practically eternal in comparison to my lifespan...." Small drive belts

Bruce Gentry said: One reason polyurethane was so popular for drive rollers and belts is it's traction. Many tape recorders used them because they could be smaller and cheaper yet able to grip and

Steven said: Another “plastic rot” question. I have a set of Xcelite tools. One of them, a stubby Philips screwdriver, developed a white coating on it that was impossible to remove without sanding

I just did a quick measurement on my 7D15, with the plug-in installed in a horizontal slot, and being fed a 1 MHz 5 div p-p sine wave from a vertical amplifier. The 7D15 was set to measure frequency,

Polyethylene definately seems to be benign and long lasting.? With regard to Xcelite handles and other items, I had to spend my youth in the place many of those stinky plastics were developed and

One reason polyurethane was so popular for drive rollers and belts is it's traction. Many tape recorders used them because they could be smaller and cheaper yet able to grip and carry the power. It is

Q213 pins are connected to GND and +5V rails with very low value resistors, so I would be suspicious of any in-circuit resistance measurements. A non-invasive test of the basic health of these

OK, I have the scope on the bench again for a closer look at all the components in the +75 supply. Obviously I haven't torn it apart to test out of circuit, but now that I tested it again, Q1197 seems

Ah yes, sorry Max, you mentioned both arrows some posts back. I mentioned calibration of the PG506 since when calibrating the 7A16A you also try to compensate for pulse shape of the PG506. Albert