Suggested by a 1965 Electronic Design, this circuit was originally proposed for oscilloscope operation, but can be used with other instrument types.
This circuit, found in documentation from the 1980s, uses an operational amplifier from that time....
This low frequency sinusoidal oscillator was obtained in documentation from the 1970s. Operational...
This circuit was found in a 1980s documentation. It is intended for remote vibration monitoring...