Power Darlington Stage (CB22365E)

This circuit is an alternative to using Darlington power transistors in the previous amplifier. The power is a few watts.

Synchronized switch (CB8253E)
Synchronized key. This circuit was found in a 1966 General Electric documentation. Modern...
Wien Bridge Oscillator (CB8792E)
This oscillator by Wien bridge is based on stabilization by a small incandescent lamp. The...
4046 oscillator (CB9221E)
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...