If I connect a headphone to my radio headphone's jack, the radio detects that a headphone is connected and mute the built-in speaker. Similarly if I connect a headphone to my laptop, Windows reports the same thing.
Just curious how the detection is being done? I am pretty sure it does not detect the resistance of the headphone alone because once when I am trying to connect a jack alone with open wires (no actual speaker), it is still detected. I open my radio, observe the headphone jack and do not notice any obvious mechanical switch that gets activated when something is connected to the jack.
Just curious how the detection is being done? I am pretty sure it does not detect the resistance of the headphone alone because once when I am trying to connect a jack alone with open wires (no actual speaker), it is still detected. I open my radio, observe the headphone jack and do not notice any obvious mechanical switch that gets activated when something is connected to the jack.