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HD Audio Jack Detection Specifics and Spoofing - Page 1
https://www.eevblog.com/forum/projects/hd-audio-jack-detection-specifics-and-spoofing/
Jack detection uses an ADC that reads the values of the resistors, as shown in your diagram. You will not be able to draw "phantom power" from that, and if you introduce extra resistance in the loop, you will mess up the detection. See section 7.4.2 of the HD audio spec for more information. I suggest using a relay to connect those lines instead.
US20130021046A1 - Audio jack detection circuit - Google ...
https://patents.google.com/patent/US20130021046A1/en
At 501, a baseband processor (e.g., the baseband processor 105) can provide an enable (EN) signal to an audio jack detection switch (e.g., the audio jack detection switch 115) and, at 502, a detection circuit (e.g., the detection circuit 118) can be turned on. In an example, the detection circuit can be triggered by detecting that the audio ...
Headphone Jack Detection in Personal Electronics …
https://www.ti.com/lit/pdf/slva961
Headphone Jack Detection in Personal Electronics Using Comparators _____ Headphone Jack Detection in Personal Electronics Using Comparators Electronic devices from cell phones to laptop computers usually include a stereo headphone jack. When an external headphone is plugged in, the built-in speaker must be disconnected and the audio output
Can I safely short the detection pins of an HD Audio Jack ...
https://www.reddit.com/r/techsupport/comments/s4n64p/can_i_safely_short_the_detection_pins_of_an_hd/
After some digging I found the specification for the HD Audio connector (section 7.4.2 is relevant, page 220), and a similar thread on EEVblog forums. If I'm reading it correctly, shorting the detection pins should solve that problem. I don't care about actually detecting the plug going in/out, since I only use that one audio output.
Electronic – audio jack detection circuit – iTecTec
https://itectec.com/electrical/electronic-audio-jack-detection-circuit/
The audio-jack has a detection-pin which is connected to GND when the plug is inserted. I am searching for a circuit which turns off the bluetooth-module when the detection pin goes to GND. I am very new to electronics, but nevertheless i tried to create a little schematic and i dont know if it'll work. Here pin 1 of the switch is the detection ...
Understanding Audio Jack Switches and Schematics | …
https://www.cuidevices.com/blog/understanding-audio-jack-switches-and-schematics
In a similar manner, this setup would engage a detect feature when the terminal 10 contact is opened by inserting the plug. Example of a detect option when the plug is inserted Controlling Other Portions of a Circuit Independent of the Audio Signals. In this example, terminals 4~6 are electrically independent of the audio signals 1~3.
MAX97236 Audio Amplifier with Jack Detection | Maxim ...
https://www.maximintegrated.com/en/products/analog/audio/MAX97236.html
The MAX97236 is an audio amplifier with volume control and microphone preamplifier intended for use in portable audio systems employing a headphone jack. The audio circuit is powered from a single, dual-mode charge pump, allowing the output signals to be ground referenced, and eliminating the need for large and expensive DC-blocking capacitors.
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