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 astable was found in a European technical documentation from the 80's. The perfectly...
This circuit generates the busy tone of ordinary telephones. The transistors can be the BC548 and...
This is another one of the many sequential circuits that we have in this section and on the...