Ceramic filter Amplifier (CB23844E)

We found this circuit in Radio Electronics magazine from October 1962. The article announced the applications of ceramic filters in tuned amplifiers.

110 to 220V Voltage Elevator (CB4575E)
This circuit is from 1995 documentation. The power depends on the transformer, which in this case...
Operational Overcurrent Switch (CB12313E)
We found this circuit in an English publication in 1991. The circuit can be assembled with...
Intercom for noisy environments (CB21069E)
Found in a Popular Electronics from the 90s, this circuit is suitable for communication between rider...