3 V buffer (CB7142E)

This 3 V rail to rail buffer was found in a National Semiconductor documentation. The gain is unit.

Transmitter for 80 m (CB4053E)
This transmitter for the 80-meter band (3.5 MHz) was found in an old documentation for radio...
100 gain amplifier with LM381 (CB25272E)
We found this high gain circuit with the LM381 preamplifier in a Radio Electronics from February 1990....
10 to 150 kHz Oscillator (CB6510E)
Found in an American documentation, this circuit may employ general purpose transistors and the...