This circuit was found in a 1980s documentation. It shows how to obtain a bistable with the 555 by directly driving two indicator LEDs.
Critical components of this project are the Geiger tube and the 300V battery. The battery can be...
Found in a 1967 Ferranti documentation, this regulator makes use of an operational amplifier of the...
Found in a Popular Electronics from the 90's, this circuit can generate frequencies according to the...