Complementary symmetry stage (CB22237E)

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

Moisture Detector (CB5367E)
We found this circuit in an 80's Radio Shack publication. The circuit uses a company buzzer, but...
Ultra sensitive RF relay (CB22291E)
This circuit is an improvement of the previous circuit. An input resistor must be included...
Ceramic Resonator Oscillator (CB15997E)
This circuit produces a signal at a frequency of 455 kHz, based on a ceramic resonator CSA455E, by...