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From: john larkin <jl@glen--canyon.com>
Newsgroups: sci.electronics.design
Subject: Re: LEDs, drama
Date: Sun, 04 May 2025 12:13:40 -0700
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On Sun, 04 May 2025 18:28:24 +0100, Cursitor Doom <cd@notformail.com>
wrote:

>On Sun, 04 May 2025 06:56:23 -0700, john larkin <jl@glen--canyon.com>
>wrote:
>
>>On Sun, 04 May 2025 12:18:12 +0100, Cursitor Doom <cd@notformail.com>
>>wrote:
>>
>>>On Fri, 02 May 2025 08:10:44 -0700, john larkin <jl@glen--canyon.com>
>>>wrote:
>>>
>>>>
>>>>
>>>>One of my young engineers just got the first unit of a thing he
>>>>designed. He was all cautious about bringing it up a step at a time,
>>>>so I just pulled rank and switched it on in self-trigger mode. It
>>>>works.
>>>>
>>>>https://www.dropbox.com/scl/fi/wl51ennrq60edw9ina3za/P800-1Hz-Selft-Trigger.mp4?rlkey=ravaj03c330jjfmplylxr2k7j&dl=0
>>>>
>>>>It's an 8-channel high voltage pulse generator. We're not sure what
>>>>it's used for and the customer won't tell.
>>>
>>>Could be for the timing capacitors in a fusion bomb. I really wouldn't
>>>worry about it.
>>
>>I've done timing to fire implosion fission bombs, and this doesn't
>>look to be one of those. 
>
>Yes, I said *fusion* bomb which is somewhat different. Timing is
>critical for those. It's rather like grasping a wet bar of soap.

We did the master timing system and the beam modulators for NIF, the
fusion laser in Livermore. The fusion energy yield is about the energy
in a jelly donut.

After decades, they finally got the fusion yield, energy out over UV
light in, above unity.

>
>>Some of the things that could be really fun aren't, because the good
>>bits are secret.
>
>Yes, I can see how that would spoil things a bit from your POV.
>
>>One of my son-in-laws has a PhD in engineering mechanics and works for
>>a big lab that blows things up. He says it's not much fun because the
>>booms happen miles away and all he gets is data.
>
>Er, yes. I think on balance I'd sooner be miles away in his position.
>Jeff loves blowing stuff up. Haven't heard from him in a while; hope
>he's okay and not been 'hoist by his own petard' if I might throw in a
>bit of Hamlet here.