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 well-known configuration of the guitar effects pedal was obtained in an English magazine from...
This circuit was obtained in the National Semiconductor Linear Applications Handbook of 1994. The...
For -48 V voltages, this fast sensor was found in a 2005 Linear Technology application manual. The...