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.

Residential Lock and Alarm (CB18669E)
This encoded lock circuit with alarm for use in homes was found in a publication from the 90s. The...
Temperature Sensor (CB14135E)
The circuit shown was found in the 1994 National Semiconductor Linear Applications Handbook. The...
FET timer (CB12500E)
This circuit is from a 1979 documentation. The FET can be the BF245 or MPF102 and the bipolar...