Jim Thompson wrote:

David Eather wrote:

50 years ago if you reminisced about a vibrator power supply everyone knew
exactly what you were talking about. In a few more years you won't be able
to mention it in polite company without first giving a detailed
description first - and even then some people will still think you are
being obscene . Ahh, the wonders of progress.

Indeed. Some here would be astonished that some vibrator packs didn't
need rectifiers, they had synchronous output reeds.


Did you know that there were plug in solid state replacements for 12V
vibrators, 50 years ago? A crude oscillator with a transformer and a
pair of Germanium TO3 transistors in a deep drawn aluminum can. They
were filled with sand to help remove the heat. They worked, but would
die from overheating.





--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.