This passive circuit was found in a 1980s documentation. The circuit serves to indicate the balance or balance between the channels of a stereo amplifier.
This unijunction transistor flasher or blinker was found in an old Popular Electronics. The...
This circuit is suggested by National Semiconductor and is based on an LM1578-A integrated circuit...
This trimmer or reaper amplifier cuts the signal peaks at a voltage determined by the zener...