We found this circuit in a 1971 documentation. The circuit can be assembled with more modern transistors such as BC548 for Q1, BC558 for Q2 and BD135 for Q3.
This 6-transistor receiver was manufactured in Japan in the 60s. The circuit is superheterodyne and has a 6V...
With this relaxation oscillator with a neon lamp we can generate small intensity audio signals for...
Based on a CA3059 zero-cross switch, this circuit was found in the July 1995 Electronics Now...