This low power circuit was obtained from an American 80's documentation. The circuit indicates the voltage of a battery being trimmed by the trigger point. The transistors can be the BC549.
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...