This circuit was found in the May 1959 Radio Electronics magazine. Its purpose is to provide bias voltages for circuits under test. The circuit is isolated from the power grid.
This circuit was obtained from a General Electric publication from the 1960s. The transistors are...
This circuit was found in the June 1970 Radio Electronics magazine. The power to the load is triac...
This configuration is found in other LM317 manufacturer's manuals. It is a regulating circuit in...