Using Switched 1/4" jack socket

Started by carboncomp, December 04, 2010, 05:36:50 AM

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carboncomp

Been using this guide for wiring up using the switchcarft open sockets, but was wondering if there was a similar one for the inclosed Using Switched 1/4" jack socket? (and what is the point of a switched socket?)



bassmannate

It's set up so when you plug your input in, it turns the circuit on by completing the ground connection to the negative terminal on the battery.

twabelljr

#2
Look at a stereo cable and you will see the tip, a small ring (for left and right channels), and the long sleeve. A mono cable just has a tip (one channel) and a sleeve. To better understand, take a stereo jack and connect your DMM set on ohms to the ring and sleeve connections. Plug in a stereo cable and you will not read continuity from the ring to sleeve. Plug in a mono cable (a guitar cable) and you will read continuity from the ring to sleeve connection. That is how the ground circuit is completed to power the effect. No continuity is effect off and continuity is effect on. We can use that extra tab on a stereo jack to easily power an effect without an external switch! And then all your music will of course travel from the tip of the jack to the input of the effect.
Shine On !!!

carboncomp

But what about this type that has the extra tabs for TSR that I assume one side is only live (switched) when the jack is not inside?


whats the point of this, and how would you wire them up.......pictures would be good, im a little slow  :icon_redface:


John Lyons

There is more than one type/function of switching jack.
You can have it disconnect the battery from the circuit which is what we use
stereo jacks for (The ring connects to the sleeve when a plug is inserted which
turn the pedal on as far as power goes).
You can also use a switched jack for routing signal. Ex. Using a jack to send a signal
out when you plug into it but when no plug used the signal flows through the pedal.
As in an effects loop etc. The signal is routed out through the jack when you plug in
and when it's not use there is a contact that is "normally closed".
It's a bit hard to visualize with out pics/diagram I know...

Basic Audio Pedals
www.basicaudio.net/

phector2004

When using a stereo jack, you're connecting the ring to the sleeve by putting in a mono jack.

Switching jacks like the ones you've got are useful in amp inputs. Let's say one input connects to one preamp tube, whereas the other connects to two in parallel. You can use these switches to shunt the second tube's input to ground when you don't have a jack in that particular input. When you do plug a jack into it, it opens the circuit and the parallel input is connected to your guitar.