Found in an Electronic Design from the 90's, this circuit indicates three voltage levels by activating the LED in 3 modes: off, flashing and on for high voltage.
This circuit was found in an old American documentation. It can operate with signals from 40 Hz to...
The circuit shown in the figure makes it possible to trigger a load after times that can extend up to 4...
This circuit has as a critical component the transformer that has low voltage windings for the...