This circuit was obtained in an American publication of the time. Transistors are commonly used. The circuit can be adapted for use as a shield.
Suggested by General Electric in 1980s documentation, this circuit makes use of PUTs that are not...
If the reader still uses silk screen printing tables this is an interesting circuit found in a 1994...
This circuit that draws 1 out of 8 LEDs was found in an 80's American documentation. The circuit...