Flasher CA3130 (CB22004E)

Found in an English documentation from 1977, this flasher or pulser circuit drives an LED. The frequency depends on C2.

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...