This circuit was found in an American documentation from 1968. The circuit generates ladder-shaped signals adjusted in a potentiometer. Equivalent transistors can be used.
The circuit whose characteristics are given in the graph uses two transconductance operational amplifiers...
The idea of this circuit is simple. Installed in a place where it is desired to be silent, it...
This circuit causes an LED to flash when it gets dark or when no light is falling on the sensor....