SCR Steady Hand (CB22098E)

This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type, for example series 106.

Shell game (CB23847E)
This simple game in which the player has to guess the chosen position of the key was found in a...
Pressure change alarm (CB22352E)
This circuit was obtained from an English documentation from 1995. The operational amplifier has...
Low Power Amplifier with Transformer (CB12874E)
This circuit provides just over ½ W to a small speaker. We found this configuration in an old...