This very detailed Dimmer was found in an English documentation from the 90's. The SCR could be a modern equivalent like the TIC106. The circuit is only suitable for incandescent lamps.
This circuit allows you to read resistors up to 20 M ohms, converting it into voltage. The circuit is...
The circuit in the figure is a useful continuity test serving to check the condition of circuits and...
This circuit beeps when the sensor is triggered by the opening of the freezer door or other...