In use telephone indicator (CB8665E)

This circuit was found in a 90s Electronics Now. The circuit can use a TIC106 for the SCR.

AC134 or AC126 stage (CB4267E)
This step uses germanium transistors such as the AC151, GE2, and others having been found in a...
Operational with adjustable gain (CB7409E)
This circuit was obtained in an Electronic Design from the 80's. It has the adjustment of the gain...
High Stability Emitter Follower (CB25618E)
We found this high input impedance, low output impedance amplification stage in the October 1993...