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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: john larkin <JL@gct.com> Newsgroups: sci.electronics.design Subject: Re: Circuit Symbol Date: Fri, 20 Dec 2024 19:20:20 -0800 Organization: A noiseless patient Spider Lines: 66 Message-ID: <ruccmjlhbkhauttklchd2m5rinvr9hu5ab@4ax.com> References: <jsn6mjpssnkgvdi2d3009mvce0gc6utroh@4ax.com> <86q6mj59dfa4q39fsoj3a1kp75lu26415t@4ax.com> <s0s6mj5jm5shffuahs9ri2f8358a5h1vf4@4ax.com> <mt37mj9o1i8o456g9fco88a55400badvkg@4ax.com> <vk1d02$2tgag$1@dont-email.me> <6hj8mjh23amgp1kfb5vjcq1nol787afv1g@4ax.com> <vk2088$311af$1@dont-email.me> <2979mj96add5j47osig7hnfjrn705a1ovt@4ax.com> <vk27bm$32bpt$1@dont-email.me> <frb9mjha42ffs3v1um7s7l582j8823mqgk@4ax.com> <24ebmjtmf016ft1bgqq95a3c7p6dllqkda@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Date: Sat, 21 Dec 2024 04:20:21 +0100 (CET) Injection-Info: dont-email.me; posting-host="5ae8e2477a95e38eca0a8da9df798e27"; logging-data="4070369"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19pm7weSwql8h14uVkq5Ruv" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:V/atclkcUQzoPkNS/cFXyMDMW9M= Bytes: 3452 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. >>>> >>>> >>> >>>Everything designed in Britain in the 1960s was legally required to leak >>>oil. That includes the Concorde and the QE II. >>> >>>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.