From: Peter H. Coffin (hellsop_at_ninehells.com)
Date: Wed May 05 2004 - 08:53:48 PDT
On Wed, May 05, 2004 at 10:11:24AM +0200, Johannes Wolf wrote:
> Sorry Andrei, that is not logic.
> There are two types of jacks: with switch (bypass) and w/o.
>
> So the pure mono jack w/o switch needs TWO contacts only.
> If there is a bypass switch they typically have one more contact -> 3 in
> total.
> It might well be that the jack comes with an even number of contact pins,
> but then two of them are connected.
>
> Thus the pure stereo jack w/o switch needs THREE contacts.
> Equipped with a switch there need to be TWO more contacts minimum -> 5 in
> total.
> Again, it might well be that the jack comes with an even number of contact
> pins, but then two of them are connected.
mechanical cutoff needs additional contacts for each channel which short
to channel signal when no plug is inserted. signalled cutoff only needs
one additional contact, which (IIRC) shorts to sleeve ground when a plug
*is* inserted. Don't make me haul out ASCII diagrams....
Both of you are arguing the same point; you're both just getting confused
because Andrei's presuming that the application requires a jack
with cutoff, and you're looking for a specification of that assumption
and saying he's wrong when it's left unstated.
So can we drop this part now?
--
54. I will not strike a bargain with a demonic being then attempt to
double-cross it simply because I feel like being contrary.
--Peter Anspach's list of things to do as an Evil Overlord
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