LOL! I had forgotten what this thread was about.
When I looked up at the circuit diagram, I was thinking, 'what kind of battery charger is this?'..
Then I went back and saw the Youtube vid.. Something that is was
(until this morning) very dim in my memory.
That's what happens when you get old. You run down to the basement
and once there, you have no clue as to
why you are there...