General > General Technical Chat
Oppenheimer Movie Review
coppice:
--- Quote from: peter-h on July 31, 2023, 08:17:57 am ---Regular tests are taking place these days too, but without the active material. So you can just do it in a bunker.
They must be using MOSFETs or similar nowadays. It is very easy. About 30 years ago I designed a handheld exploder device (these are widely used to trigger demolition/mining charges) and the spec is typically a few hunded volts and a few amps, discharged from a specific capacitor. There is a spec on the V/I profile to be achieved. The krytron or similar device does the job nicely (even at ~10000G for a 155mm shell - https://en.wikipedia.org/wiki/W48) and at the time there was nothing else because valve technology won't deliver high currents. The krytron works by flashing over. There is totally no reason to use them today.
--- End quote ---
They have concerns, like radiation hardness, that you might not.
themadhippy:
--- Quote ---like radiation hardness
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recall a story from years back were the west was laughing about russia still using valves and wasn't clever enough to use something a bit more modern.
KE5FX:
(Shrug) Ours still work. Do theirs?
msuffidy:
--- Quote from: KE5FX on July 31, 2023, 05:16:24 pm ---(Shrug) Ours still work. Do theirs?
--- End quote ---
That is a good question. It seems Russia is so dysfunctional they may not really have anything left to send back. That is coincidentally maybe the problem with what is happening right now with hitting Moscow. That is to say all the expensive property in Russia may be keeping nuclear exchange from happening, and is now being attacked anyway. You can't blame Ukraine for wanting some retribution, but it probably is the best way of getting WW3 happening. It may also be an active plan to try to get a war going to save Ukraine.
peter-h:
The problem is that out of the few k they have, even if only a few work, it will be bad news.
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