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 for a frequency of 10 kHz was found in an Electronic Design. It makes use of a tunnel...
This oscillator can be used to generate sinusoidal signals from less than 1 Hz to close to 20 kHz....
The purpose of this circuit is to detect the movement of a person by the changes in light that...