Found in a 1947 publication, this circuit uses 4 parallel/push-pull tuber in the output stage. The circuit employs dual power supply with two rectifier tubes.
This circuit was found in a Popular Electronics from the 90s. It uses a LASCR which is a photo-SCR...
The shunt type regulators are connected in parallel with the load, deflecting the current to...
This MW receiver was found in a Raytheon circuit manual from the 1960s. Transistors are the first...