FET Colpitts Oscillator (CB22394E)

This ultra-simple circuit has the frequency determined by the LC network. Any general purpose JFET can be used.

SCR Steady Hand (CB22098E)
This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type,...
10 W amplifier TDA2006 II (CB15242E)
The power supply for this circuit must be symmetrical at 15 + 15 V and the load at 4 or 8 ohms. The...
1 A Adjustable Power Supply LM109 (CB14501E)
The LM109, which is not common today, was manufactured by many semiconductor companies. This...