# Switching Split Power Supply ± 12V 500mA Split Supply

**Type:** Product page · **SKU:** ADA2591 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/switching-split-power-supply-12v-500ma-split-supply.html ([markdown](https://core-electronics.com.au/switching-split-power-supply-12v-500ma-split-supply.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: CE04424.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/CE04424

## Description

I know you just did a double take when looking at this power supply, what's up with the **two** cables? Normally you have a switching power supply that plugs into the wall and provides something like 5V or 9V or 12V regulated DC. This **split** power supply is interesting in that it gives you **two power supplies!** One is a positive-with-respect-to-ground +12VDC. The other is negative-with-respect-to-ground -12VDC. The max voltage differential is 24V from negative to positive so you are getting a true 'split supply'

Excellent for use with analog electronics, motor controllers, lab equiptment, modular synthesizers, or anything else where you've found yourself puzzling over the need for a matching negative power supply.

The black wire is your every day classic +12VDC with center positive. The white wire is the negative supply, its *also* center positive which means the center is the same as the black wire's ground. The 'ring' of the white-cable connector is -12VDC. You can draw about 500mA from each side, a total of 1A. Please note that the output is not as strictly regulated as some other power adapters you may have used, the floating voltage can be +-13V and at max draw, droop down to +-11V or so. You may want to have an extra linear regulator if you want the output to stay rock-solid over a wide current-draw range.

## Technical Details

- [Datasheet](https://cdn-shop.adafruit.com/product-files/2591/12VPowerSupply.pdf)
- Cable lengths: 1.2m each
- 5.5mm / 2.1mm DC jack

Product Dimensions: 86.0mm x 48.0mm x 31.0mm / 3.4" x 1.9" x 1.2"

Product Weight: 127.0g / 4.5oz

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/2/5/2591-01.jpg)