In Rick Frazier
wrote:

It was an easy task to put together a decent but cheap analog power
supply with a few 3 terminal regulators to power the devices in
question,

I was surprised to find a cache of 7812s in my parts bin and even one
LM320K-12 and one LM340K-12.

and all of the hash was gone (for awhile). I don't exactly
know how, but a few of the things somehow crept back into the house,
and it's time to go on another extermination binge for the wall warts
again...

I just took a walk around the house and see that the things are
everywhere, all plugged in and probably all squawking to some degree.

--
Bert Hyman St. Paul, MN