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Its not really a problem in real life since most DC blocks only have capacitors that are 100n or lower, the short current pulse doesn’t hurt anything!

Hi all, just for information, there are 2 (TWO!) 8644A in good shape offered on a popular internet auction site. Search for item #334365530011. Only drawback: pickup only, in the eastern part of

Lol no its a different JBC

If you haven't seen it yet, Illya Tsemenko (xDevs) has done extensive work on these machines and documented the process thoroughly. See for example https://xdevs.com/fix/hp3458a/. I think there are

It's worth adding that a DC block only provides some measure of safety. The ramp up voltage of a DC signal is an AC signal and can pass right through your series cap. If you look at DC blocking filter

Hi Lothar I do remember the kits you are talking about but different to the Phillips EE8 / EE20 kits As they had a wooden board and you placed the cardboard lay of the circuit you where to build Onto

PTT Telecom BV Kootwijk's 8562A S/N 3029A05239 was the star of the show. I wonder where it is now?

Hi wasn't the EE20 the ad on set with speaker and a lot more components wish I still had it as it was an inspiration for lots my age into electronics Paul

Hello Gerald, Interesting discussion, and thank you for this work. It's indeed a shame that such nice analyzers as the HP8560/90 series has this common issue. I have an HP-8561E with a dead YIG. I

JCB Dave

JBC- isn't that the British heavy equipment company? (backhoes, bulldozers and such) -Dave

When you talking about phillips EE kits are you talking about the things that used the blue hole plates and springs to clip the parts ?

Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff . As far as soldering irons concerned ERSA was the

My father had an electronics business in the 80s. Ham radio stuff, some computer and video game things. That business was mostly wound up by the time I was born, but all the parts and equipment were

For me it was the mid-1960s, when I was in year 9 high school I think. Our 21" STC TV had lost sync. I asked mum if I could have a go fixing it. She looked me in the face and could see that I was

In Argentina we had Lupin Eletronica magazine, I do my first experiments with them. I was 8 yo when started. I do electron tube radio receiver ( very simple ) but my father don’t let me to connect

Ditto. I still have few bits of my EE20 knocking around. I presume you have seen http://www.hansotten.com/electronic-kits/ee-series/ee8-ee20-a20/ and https://archive.org/details/ee20-colour-en I don't

Hi Paul, yes 1949 for me! My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the

Growing up in Germany we had shopclass as well as technical drawing , later when I learned a trade we had to go to vocational school once a week and beside of all the electronics stuff we also had

Hi Adrian I think I must be a few years younger than you as I was born in !957 I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV