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How to wire 5 pin Jack

Einstein Jr.

Oct 21, 2014
21
Joined
Oct 21, 2014
Messages
21
Hi again!

I have a project that amplifies a certain sources sound and feeds it to a jack. So I have two wires for attaching to the jack: ground and the signal wire. The jack is this one: http://www.amazon.com/3-5mm-Female-...F8&qid=1413910993&sr=8-7&keywords=3.5+mm+jack. The middle I presume is ground and I believe the two sides are for two different channels but why would there be two pins per channel. Any thoughts appreciated.
 

KrisBlueNZ

Sadly passed away in 2015
Nov 28, 2011
8,393
Joined
Nov 28, 2011
Messages
8,393
Look at the first question on that product page. Each channel has one pin for the contact that touches the plug, and a second pin for a "switched" contact, which normally connects to the first pin but disconnects when the plug is inserted. In some cases, this enables you to switch the signal to a different part of the circuit (e.g. a speaker amplifier) when nothing is plugged into the socket, but disconnect the signal from that part of the circuit when something is plugged in.
 
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