Obtained from an Electronic Engineering of the 90s, these circuits can be applied to almost any operational amplifier. Signal shapes are given next to the diagram.
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...