Timeline for Can a voltage divider be used for (input) jack detection?
Current License: CC BY-SA 4.0
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| Sep 10, 2020 at 15:40 | history | edited | Chris Stratton | CC BY-SA 4.0 |
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| Sep 10, 2020 at 15:35 | comment | added | Chris Stratton | It might be better to say its moderately feasible for the sender and only remotely so for the receiver. Even sender circuits can cause issues though - I spent several fun days debugging the source of loud "thumps" on boot in a product which had an Android board permanently connected to an amplifier, turned out the stock audio driver was applying current pulses to measure the impedance of whatever was connected. Fixed it by adding a resistive load impedance and then replacing the testing code with a simple assignment of its result. | |
| Sep 10, 2020 at 15:32 | vote | accept | Arrrow | ||
| Sep 10, 2020 at 15:32 | comment | added | Arrrow | So, detecting using a circuit is really only remotely feasible if you are the "sending" end of an audio circuit eg audio source? | |
| Sep 10, 2020 at 15:28 | history | edited | Chris Stratton | CC BY-SA 4.0 |
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| Sep 10, 2020 at 15:21 | history | answered | Chris Stratton | CC BY-SA 4.0 |