Re: Circuit Symbol

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.