10-21-2020, 09:39 PM
As far as I've seen no they are marked properly. The + is where the positive voltage exist the rectifier. The ring (cathode) on the 1n4007 goes to the + side of the filter cap.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry