Found in an Electronic Design from the 90s, this circuit provides outputs according to the input following the truth table given next to the diagram. The various options are shown.
This circuit is intended to detect when current flows through the opening of a car door. The...
This low power metronome produces pulses in a small loudspeaker. Pule rate is adjusted by P1 and...
This circuit uses a 4020 counter that divides the frequency up to 210, being found in a former...