Smart Charger (CB26305E)

This circuit was found in Radio Electronics magazine from the 90's. The circuit is for small NiCad batteries.

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1 second to 12 minutes Timer (CB19556E)
This circuit with JFET was obtained in a book on FETs of 1989. The circuit is still current since...
11 W amplifier TDA1516Q (CB15374E)
We found this amplifier in the Philips Databook of 1990. The stereo circuit has power that reaches 6...
10.7 MHz Amplifier (CB4290E)
This is a classic FM amplifier IF amplification stage configuration. The circuit is from a 1980s...