+/- 15 volt dc power from battery

[JusticeHere]

If I have a +/-15 volt dc power supply requirement for an instrument, how can I supply that instrument the required power with batteries? Any ideas for suppliers you can order small quantities from the internet would be helpful as well.

Thanks!

 

[duke37]

You need more data.
I suggest that you use four 9V batteries and a 7815 positive regulator and a 7915 negative regulator. The batteries must be big enough to provide the current.

 

[BobK]

10 alkaline cells for each polarity also works.

Bob

 

[JusticeHere]

10 alkaline cells for each polarity also works.

Bob

How would the wiring work for the two battery packs? The input wiring is +15v, -15v, and common.

Thanks.

 

[davenn]

How would the wiring work for the two battery packs? The input wiring is +15v, -15v, and common.

Thanks.

the zero/common rail comes off between the 2 packs and from that pretty obvious when the negative and positive rails come from