Battery and power jack together?

[taylorchuck15]

Hey,
I'm new to this, and I've seen different pedals that have the power supply jack with a battery plug together. I'm working on the LPB1 I got  schematics for from "zeonhost" and it only shows how to connect the battery, but not the power supply or both. I was wondering how you would do that. Thanks,
Taylor

[George Giblet]

The DC Jacks come with a switch contact which connects to the outside part of the DC jack (usually positive), this usually connects to the *circuit's* +ve power terminal.  The other side of the switched contact disconnects from the outside part of the jack when the jack is inserted, this usually connects to the battery +ve.

So when the DC jack is plugged in the outer part connects the +ve of the DC jack to the +ve of the circuit ie powered from the C jack.   When the DC jack is removed the switched contact closes and connects to the battery +ve to the circuit's +ve.

Do a search on DC Jack pinouts to find which contacts are what, alternatively you can work it out with a multimeter with the DC jack inserted and removed.

[taylorchuck15]

Is that how you make the battery connector and the power supply connector work together, or is that just for the power supply by itself? I'm still a little confused. And...does it matter if I use a 2n5088 or a 2n5089 for my boost or do they both work?

[captntasty]

Here's a very informative link on switching and power:

http://www.generalguitargadgets.com/index.php?option=content&task=view&id=172&Itemid=200

Either tranny will work - the 2N5089 is a low-noise high-gain version of the 2N5088 - try 'em both!

[taylorchuck15]

Cool, it makes a lot of sense with the picture diagram. I get it now. Thanks. 

[taylorchuck15]

Okay, everything worked out fine with the wiring, but whenever I plug in my power supply, the pedal doesn't work. I plug it i on a single power supply, and with the daisy-chain I use, and when I use the daisy chain it sucks out the ower in all my other pedals. So whats the problem?

And I would like to know how to put an LED to it with a DPDT switch. It gets a little confusing when you cant tell if its on or off.

[captntasty]

Something is shorting out.  Shot in the dark here:  what kind of DC jack do you have?  All metal or one of the black plastic types?

[taylorchuck15]

I have the black plastic type, I dont think anyhting is shorting because the wire I used was solid.