Re: Circuit Symbol

On Thu, 19 Dec 2024 16:01:12 -0800, john larkin <jl@glen--canyon.com>
wrote:

On Thu, 19 Dec 2024 23:39:17 +0000, Cursitor Doom <cd@notformail.com>
wrote:
>

On Thu, 19 Dec 2024 14:29:50 -0800, 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.

>
The Japanese initially started off by copying the British bikes. Then
they immediately set about looking for ways they could be improved.
Once they'd got ahead, they set about continually improving the
improved designs, even if they were only competing against themselves.
The British just sat back and complacently did nothing; just kept on
turning out the same old designs year in year out. Within a decade,
the British motorcycle industry as it had been known for 70 odd years
was in terminal decline. There's a lesson there somewhere for all of
us.

>
The Japanese also put a multi-plate clutch inside the crankcase, in
the oil.
>
It was absurdly easy to replace the clutch plate stack.
>
A guy near here has a new Royal Enfield. It is pretty.

They're made in India nowadays. I think some Indian outfit bought the
name and the designs and setup a plant over there. I have to say all
credit to them. They've made a big success of it and the stuff they
produce is selling like hot cakes and is very positively reviewed.
Naturally though they've retained all the old original model names,
the bikes themselves have been brought up to date with all the latest
technology.