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.
I found this circuit in a doc umentation from the year 1968. It uses germanium transistor and has...
January 2017 - The new Texas Instruments TLV354x series of operational amplifiers with 200 MHz...
This high gain small signal amplifier circuit was found in an old publication on transistors....