We found this circuit with JFETs in a Radio Electronics magazine from June 1969. The circuit has its assembly described in a complete article. Equivalent transistors can be used.
This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type,...
The power supply for this circuit must be symmetrical at 15 + 15 V and the load at 4 or 8 ohms. The...
The LM109, which is not common today, was manufactured by many semiconductor companies. This...