This 25 W phase photo control was found in a 1965 General Electric publication. The circuit uses a LASCR which is an unusual SCR photo today.
This step-down converter with 10 to 60 V input produces a 5 V output with a maximum current of 5...
Found in an old American documentation, this step has as input and output transformers coupling. Two...
This circuit was found in a 1963 magazine, but can still be easily assembled with some current...