Common collector stage (CB22227E)

Found in a publication from the 50's, this circuit uses a germanium transistor of the time. The power supply is simple.

500 kHz Clock (CB6468E)
Operating at just 1.35 V this circuit was found in a 1969 Electronic Design. The circuit makes use...
Low Speed Counter (CB20126E)
This input circuit for meters, which can also be used as a shield, is intended for operation with...
Sound Activated Relay (CB6318E)
This vox was found in Hughes documentation from 1968. The circuit uses components from the era. A...