This General Electric circuit was found in a 1964 documentation. The circuit triggers a relay when the sensor is activated. Trigger adjustment is done in a trimpot.
This 45 to 90 Hz hum elimination circuit was obtained from a 1980s documentation. The operational can...
This circuit is suggested by the Optoelectronics Sourcebook by Texas Instruments when AC signals...
This amplifier for a sinusoidal function generator uses a 741 integrated circuit. The circuit is...