This interesting circuit from Radio Elecronics from October 1965 shows a flip-flop or bistable with SCRs simulated by bipolar transistors.
Synchronized key. This circuit was found in a 1966 General Electric documentation. Modern...
This oscillator by Wien bridge is based on stabilization by a small incandescent lamp. The...
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...