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 Phase-Shift Oscillator produces sine low frequency signals suitable for many applications. It...
This circuit was published in a 1977 Radio Shack catalog. The PNP transistor may be BD135 and NPN...
MCP19124/5 Contains Independent Voltage and Current Control Loops Plus a Full Suite of...