Re: The joy of FORTRAN

On Fri, 14 Mar 2025 01:51:49 -0400, c186282 wrote:

   GAWD I hated the sound of those TV/monitor flyback transformers back
   in the day - like having teeth drilled.
   Wiki sez they were 30-150khz, TVs 15khz ... but no WAY hearing 150khz
   ... maybe sub-harmonics.

During the '70s energy crisis Sylvania came up with the idea of using a
current limiting capacitor in a slightly short 48" fluorescent. The cap
and a small transformer were housed in a plastic shell. The two halves
were assembled with an ultrasonic welder. Ultrasonic my aching ass.

Later my dentist had a ultrasonic device for removing calculus from teeth.
Besides the whine there was enough cooling water to drown you. Their use
was discontinued several years back. When I asked her about it she said
everybody, patients and techs, hated the things. Back to the traditional
scraping with assorted torture instruments.

The ranch supply used to have a jar full of assorted dental instruments
for $1 apiece so I have a collection. They certainly are handy for
removing fork seals or getting the crud out of firearm nook and crannies.