Peak to Peak AC to DC Converter (CB6103E)

This precision circuit was suggested by General Electric in 1980s documentation. The circuit can be implemented with more modern components.

Temperature sensor shield (CB5093E)
This circuit was found in an old publication and can be adapted for use with modern...
Programmable Attenuator (CB4915E)
This circuit was found in an American 1980s documentation. The integrated circuit used is uncommon...
Burglar Alarm (CB6108E)
This circuit is from a 1967 RCA documentation. Components can be replaced with modern equivalents. The...