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 circuit, from an old ON Semiconductor publication, suggests a shield to excite an LED from an...
This circuit was obtained from an old American documentation having a limited adjustment range....
Microchip Continues Expansion of AVR Microcontroller Product Line with Addition of Three New...