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.
The Texas Instruments TPS7A92 integrated circuit consists of a low-voltage (LDO) linear voltage...
Found in a 1969 EDN, this high current circuit, not indicated in the documentation, uses...
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...