Re: Circuit Symbol

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).
>