This circuit, which can be used as a shield, was found in a 90s Electronic Design. The circuit uses a diac and the transistor can be general-purpose.
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...