Found in American documentation from 1969, this circuit operates in the frequency range 10 to 150 Hz providing signals as shown in the diagram itself.
This circuit was obtained in a General Electric documentation from the 90's. The circuit consists of a...
This circuit is from Motorola's Linear Databook from 1990. The integrated circuit and transistors are...
We discovered this circuit in an English magazine that no longer exists. The magazine is from...