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.

Field strength meter (CB7358E)
This tuned circuit was found in a 1966 Electronic Circuit Handbook. The transistor can be any...
Analog to Digital Converter (CB21841E)
This circuit was found in Ferranti's 1974 transistor manual. Transistors are general purpose types...
Bargraph Humidity Indicator (CB11519E)
This circuit was found in a Popular Electronics from 1991. The transistor could be the BC548. The...