Complementary symmetry stage (CB22237E)

We found this step in an old documentation. The transistors are of the time and the power supply symmetrical.

Preamplifier with tone control (CB9517E)
Found in National Semionductor documentation this circuit combines a tone control with an...
Piezoelectric Buffer (CB21152E)
This circuit was found in American documentation from the 90s. It serves as an amplifier for a...
Remote Control Receiver (CB502)
With a coil formed by 7 turns of 26 AWG wire this circuit operates in the 27 MHz range. But you...