Sujet : Re: Circuit Symbol
De : bill.sloman (at) *nospam* ieee.org (Bill Sloman)
Groupes : sci.electronics.designDate : 22. Dec 2024, 04:33:30
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vk81ab$f1k2$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11 12
User-Agent : Mozilla Thunderbird
On 21/12/2024 2:20 pm, john larkin wrote:
On Fri, 20 Dec 2024 18:34:40 +0000, Cursitor Doom <cd@notformail.com>
wrote:
On Thu, 19 Dec 2024 15:46:46 -0800, john larkin <jl@glen--canyon.com>
wrote:
>
On Thu, 19 Dec 2024 22:39:51 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
>
john larkin <jl@glen--canyon.com> wrote:
On Thu, 19 Dec 2024 20:38:33 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
>
john larkin <JL@gct.com> wrote:
On Thu, 19 Dec 2024 09:09:54 -0600, Dennis <dennis@none.none> wrote:
>
On 12/18/24 21:20, john larkin wrote:
>
>
I vaguely recall that they oscillated at somethig over 100 Hz. I
powered an old car radio with 60 Hz instead of the vibrator, and the
radio's step-up transformer ran hot.
>
They ran at a frequency as high as reasonable for a mechanical device.
This allowed for a smaller transformer.
>
Vibrating contacts were the first switching regulators. Auto
generators - before alternators - used a hysteretic oscillating
contact closure to drive the field coil. That was very efficient and
not especially reliable.
>
>
>
Especially when made by Lucas.
>
Cheers
>
Phil Hobbs
>
The brits traditionallty split their motorcycle crankcases vertically,
to maximize oil leakage through the gaskets.
>
Those dumb Japanese, Honda and Kawasaki, split their crankcases
horizontally, which required us to change the oil, not just add it.
>
>
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Everything designed in Britain in the 1960s was legally required to leak
oil. That includes the Concorde and the QE II.
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I suspect Shell was at the bottom of it.
>
Cheers
>
Phil Hobbs
>
I rode the QE2 from NYC to France once. I had scheduled an engine room
tour but that was canceled because they'd had a fire. Our trip took an
extra day too, limping along.
>
Oil fire was it? (just trying to beat Phil here).
>
Probably coal.
Wrong.
https://en.wikipedia.org/wiki/Queen_Elizabeth_2She was originally powered by oil-fired steam turbines and they were replaced by a diesel power plant in 1987.
-- Bill Sloman, Sydney
Circuit Symbol
Re: Circuit Symbol