12 volts to audiogeek: whether the task is and how to prevent?

Speakers I repaired and generally work. But laziness is an engine of progress, and I came up with another improvement.

I have a homemade switch "speakers-headphones", and one group from disk toggle idle. Let this group commutes 12, and a small relay includes columns by clicking the switch. Simply and bluntly, there are only two issues: price and drakoulious. With the price of everything is clear: it is necessary to look, what to take for a basis.

I wanted to ask about turkopticon. On the back of the computer near the audio connectors, is connector-mother, and it has 12 volts. How to make even foolishly tucked back audiojack no contact with high voltage? What are the appropriate connectors? Or this task is not necessary, and if you poke there audiodream anything the speakers would not?
July 8th 19 at 16:34
3 answers
July 8th 19 at 16:36
Solution
In General, the decision of the General forces developed.
Any "mother" D-Sub.
July 8th 19 at 16:38
Of the columns at the entrance are usually decoupling capacitors, so from a 12V submitted to audiojack, will be nothing but a loud click in the speakers. Here if headphones to shove, can burn. For complete turkopticon use special connectors for the power: https://habrastorage.org/files/745/cc2/4dc/745cc24...
A good option, but the question is: most likely, audiojack itself will not burn, but short-circuits Need 12 V. connector is very thin, thinner than Jack. On the nut. Interestingly, this happens?

The second option that I was considering— RCA. - Humberto_Lynch68 commented on July 8th 19 at 16:41
: put a resettable fuse and not to worry about short circuit. Slim DC connectors are very fragile. - Sherwood_Larson commented on July 8th 19 at 16:44
: and the RCA can be accidentally plug any video cable. - Sherwood_Larson commented on July 8th 19 at 16:47
There is an idea to use the "mother" DE-9. And such a connector in a computer is not, and certainly not shove audiojack. - Humberto_Lynch68 commented on July 8th 19 at 16:50
July 8th 19 at 16:40
If I understand correctly, the columns you have the connector (Jack) under headphones.
And you want to switch between them and speakers.
I would recommend to replace the connector (Jack) on the same Jack, only with additional contacts .
Headphones stick, the contacts of the connector to mechanically break the chain sound of the speakers and plug in headphones.
No, the disk toggle into three groups. - Humberto_Lynch68 commented on July 8th 19 at 16:43
Directly into the computer. - Sherwood_Larson commented on July 8th 19 at 16:46
M. b well. as a variant of the Jack on the body of the computer. - Sherwood_Larson commented on July 8th 19 at 16:49
The task, then what... to Automatically turn on the power of the speakers.
And all these extra contacts are connected with contacts of the audio and therefore unfit to switched 12 volts. - Humberto_Lynch68 commented on July 8th 19 at 16:52
scheme draw pliz what is, and what you want. I'm confused according to understand - Humberto_Lynch68 commented on July 8th 19 at 16:55

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