That's nothing, look at these actual production Cray photos. They had to measure each wire for proper timing.
And they were very fast at the time.
Seymour Cray's path to supercomputing - CNET
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Yeah that's a bit worse than this beauty that I scored when we decommed our Facom M380. I think mine is more pretty though
I was told the same about the wiring, the loops of wire being carefully trimmed for timing reasons. Supposedly the wires are enameled silver. Not sure about the gold.. Tony.
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With the onset of good free electronic simulators and very cheap Chinese pcb's I rarely go to stripboard now.
If I recall, that first board was made by IBM, using their own special process. Wired by programmed
machine, no human involved.
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Wish I could find a spice model for 1J24Bs. Most of my design is done old school with breadboards.
Take care,
Doug
@Lampie and The Peasant. Nice work! Love the artwork on your panels The Peasant!!
Tony.
Thank you, Tony!
Creating the front panels is one of the most enjoyable parts.
Take care,
Doug
As these tubes do not have grids this will be something....
I love these tubes as they are very versitile but some experimentation is required.
Please check this site (if you not already have):
Russian Subminiature Tubes
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Not sure what you mean by this, these are pentodes, 3 grids...
Yes, I am aware of that site. Thank you!
Take care,
Doug
There's a Cray 1 (and several later models!) near me at the Computer Museum of America in Roswell, GA. I saw the thing in a special preview before they officially opened. Yes, it has all those blue wires in it, and somewhere, I think at the bottom, they're all cut. It appears the wires had to be cut to move the thing. It's a shame it's most likely never going to run again (the electrical power it takes is tremendous enough), but then again you can surely get a full-speed Cray emulator in a smartphone app. Some other model(s) use some dangerous cooling fluids, and you wouldn't want to try to run them regardless.
They were Fluorinert cooked, due to their compact size. The model 3 finally took them down.
One was built, and it had serious flaws.
Cray-3 CPU section - CHM Revolution
One was built, and it had serious flaws.
Cray-3 CPU section - CHM Revolution
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As in direct drive of ESLs? Why do you need the ZOTL then?
My direct-drive amplifier was also built on perfboards, really long pertinax perfboards without copper islands, but I have no photo's.
I do not need a Zotl, just it would be nice as it is more compact (minus 2 output tubes as no SRPP). The anodes are directly connected to the stators as in conventional tube amp can be done. The advantage of Zotl is the "output transformer" (now only used as DC to DC up-converter) is also the HV "modulated" power supply,
Under the veroboard you can see the old amp.
Under the veroboard you can see the old amp.