What "Type" Of 3PDT Wiring Is This?

[railhead]

Barber posted a shot of his new pedal over at his forums, and this is how he has his switch wired:




Is he using this wiring technique?




I know there are all kinds of methods, but I was curious. I've always shorted the input in bypass, myself, but I like how clean this looks. I wonder why he doesn't short the input?

[roknjohn]

Hey Railhead,

That is sure what it looks like to me. Looks like pretty standard 3PDT bypass setup.

[BDuguay]

I read somewhere, probably here, that wiring it as Dave has above, you keep the in and output as far away as the switch will allow you which is recommended in high gain pedals.
B.

[Mark Hammer]

Certainly the advice for keeping ins and outs apart in high-gain pedals is well-founded, but given that the distance is pretty puny, I'm guessing the use of the middle set of contacts for the LED and the outside ones for the in/out is more than likely for the same reason I use it that way too: it's just neater when it comes to running leads to side-mounted jacks.  If there is any additional separation of input/output leads in high-gain pedals (which this one isn't) that comes purely as a perk.

[analogmike]

It is very neat and tidy to do it that way but raises the probability of a leaky switch causing switch POPPING from the top center lug to the top right or top left lugs. Fine for making a few pedals but I would not do it that way for production quantities.

[railhead]

That's what I thought, too -- but that's how Barber does all of his, I think.

[Dragonfly]

Welcome to my layout gallery:)

I use the same method....

[BoostAddict]

I've always wired my plugs that way.  Only way I know of also.  I didn't know there's more than one way to wire a 3pdt 

[railhead]

I wired up another fuzz using that, and I'm not hearing any pop so far. I guess you could always just bridge lug 2 to 6 using this though, to ground-out the input.

[darron]

here's my method:
http://www.dazatronyx.com/support/true-bypass-technique.pdf

it's got a little bit of a difference to it. that's the way i would do it if i was not mounting the switch to the pcb anyway. i chose the terminals for location convenience and to get the LED away from the signal. i'd rather switch the ground also than positive (assuming that's not ground) to the led. it sounds healthier to me to have the signal's ground running beside it (as it does in all of your instrument cables, but better spaced) than the positive supply.

[bumblebee]

Welcome to my layout gallery:)

I use the same method....

i use the same method but connect the pcb input to the unused lug to ground it out when off.

i had a phaser that went nuts in bypass till i done this...

[Fp-www.Tonepad.com]

Notice the nice way to use bare wire too. No stripping! 

[Shakal]

Look! A bunch of black little letters below the picture, I think it means something...

[mountainking]

I always wire the switch so that it grounds the input of the circuit when in bypass mode which is what I think Railhead is saying you does. It eliminates the need for pulldown resistors on the input which can mess with the input impedance of the circuit. I don't understand why people use that method shown in the picture, is it a better method with certain circuits? Analogmike, how do you wire your switches?

[railhead]

I think this method looks a lot cleaner, and it makes more "sense" as far as inputs to the left, outputs to the right, etc. That said, I think it'd be a good idea to short lugs 2 and 6.

[mountainking]

Looks alot cleaner? You may not be understanding the method(that I use) that I'm trying to explain. I have the inputs on the left and the outputs on the right, and I have the led switched to ground using the center lugs of the switch, but the jumper is connected from the lower right hand lug to the upper left hand lug. The lower left hand lug is connected to ground so that the input of the circuit is ground when the pedal is in bypass mode. I'll try to find a link that shows you what I'm trying to explain and post it.

[markm]

I wire all of mine with the same method as well.
See;

[railhead]

Looks alot cleaner? You may not be understanding the method(that I use) that I'm trying to explain. I have the inputs on the left and the outputs on the right, and I have the led switched to ground using the center lugs of the switch, but the jumper is connected from the lower right hand lug to the upper left hand lug. The lower left hand lug is connected to ground so that the input of the circuit is ground when the pedal is in bypass mode. I'll try to find a link that shows you what I'm trying to explain and post it.

Yes, the way Barber (and others in this thread) wire their switches look cleaner than the ways suggested at GGG and BYOC.