That is what Enzo calls "flying rails" design. I believe Roly has referred to it as "tail wagging the dog" .
The key is what you have omitted, the power supply drawing. In this case you will see that what is normally grounded (filter caps) is not ground. It is the output hot. They have just reversed the supply tie point with the output device tie point.
As far as being derivative, the oldest example I have is from 1980. But it may not even be the original concept.
The key is what you have omitted, the power supply drawing. In this case you will see that what is normally grounded (filter caps) is not ground. It is the output hot. They have just reversed the supply tie point with the output device tie point.
As far as being derivative, the oldest example I have is from 1980. But it may not even be the original concept.