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From: john larkin <jlarkin_highland_tech>
Newsgroups: sci.electronics.design
Subject: Re: Instead scopes
Date: Fri, 30 Aug 2024 08:29:20 -0700
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On Fri, 30 Aug 2024 07:13:23 -0700, john larkin
<jlarkin_highland_tech> wrote:

>On Fri, 30 Aug 2024 06:47:54 GMT, Jan Panteltje <alien@comet.invalid>
>wrote:
>
>>On a sunny day (Thu, 29 Aug 2024 11:47:42 -0700) it happened john larkin
>><jl@650pot.com> wrote in <pcg1djt6otqheh6vgi9len892jd21g1sn0@4ax.com>:
>>
>>>On Thu, 29 Aug 2024 16:21:21 GMT, Jan Panteltje <alien@comet.invalid>
>>>wrote:
>>>
>>>>On a sunny day (Fri, 30 Aug 2024 00:43:39 +1000) it happened Bill Sloman
>>>><bill.sloman@ieee.org> wrote in <vaq1f2$jdj$1@dont-email.me>:
>>>>
>>>>>It's lot easier and quicker to bread-board a circuit in LTSpice than it 
>>>>>is to wire up a test circuit, but what that means is that you need to 
>>>>>make fewer real circuits and they are a lot more likely to work when tested.
>>>>>
>>>>>That, on it's own, is enough to explain why labs look different today 
>>>>>than they did in the dark ages.
>>>>
>>>>All it explains is boeings falling apart and astronuts ending up stuck at the ISS
>>>>and no moonlanding from the US, not even a probe.
>>>
>>>The ISS and moon landings are super-expensive theatre. Neither
>>>accomplishes anything.
>>>
>>>Boeing and Microsoft have the same problem, bean counter money-mongers
>>>have taken over from engineers.
>>>
>>>>Slimulations are _not_ realty and never will be.
>>>
>>>Spice can be very handy. As Mike says, LT Spice's real function is to
>>>train your instincts.
>>
>>I dunno, much I learned from working with tubes and transistors was by building small circuits and measuring what happened.
>>Sure spice is great for math intensive stuff such as filters.. but you still need to know the basics.
>>These days with chips doing much of the work and limited knowledge what is actually _in_ those chips 
>>it is hard to tell if a real circuit will behave like spice tells you
>>You will still need real testing.
>
>Sure, but if I wake up at 3AM in Truckee, I can Spice an idea and go
>back to bed. 
>
>https://www.youtube.com/watch?v=x6TrbD7-IwU&list=PLlD2eDv5CIe9u7jbKUkZ5xrLLSCrn0z_e
>
>Actually, I have designed useful circuits by randomly fiddling with
>Spice, stupid topologies that turn out to work.
>
>
>>Maybe boeing just spiced their thrusters :-)
>
>SpaceX is having trouble with helium leaks too. Helium is the chemical
>equivalent of slippery eels. It will leak though almost anything, even
>solid metals. If they need an inert gas, why don't they use argon or
>neon or nitrogen?

https://nypost.com/2024/08/30/us-news/boeing-execs-fought-nasa-to-bring-home-stranded-astronauts-in-starliner-sources/

This is a reversal from the Challenger disaster. NASA is being careful
this time, and the contractor is not.

Musk is cool. He annoys a lot of fatheads.