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.
Found in 1967 General Electric documentation, this circuit is intended for the control of...
This configuration was found in an American publication from the 90s. Operators admit equivalents just...
The purpose of this circuit is to increase the sensitivity of a common multimeter in its voltage...