Convert DC Power Jack to 9V Battery

[bubbagump00]

I have a PCB which has a spot for a DC power jack, with three pins, but i'd like to use a 9V battery instead. Can anyone help me out on which pins are positive and negative?

 

[Sceadwian]

No, because you didn't post with any pictures that might be able to tell us what we need to know.

By the way, a 9 volt battery is almost never a good idea, they can't produce anything more than a high (if you count 9 as high) voltage source, or very very very low currents for a long period of time.

 

[bubbagump00]

For some reason my images won't upload, but the 2.5 mm dc jack is center positive. I see that the center connection corresponds with the pin on the back of the jack, so I know where positive lead goes. Does that mean the other two pins should be negative? And would you recommend a different power source than 9V? The chip has an operating voltage of 2.4 to 5.5V. I'm using the 120 Second Voice Recorder Module found here: **broken link removed**