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  1. Parts
  2. /Power
  3. /Supplies & regulators

Switching Split Power Supply ± 12V 500mA

OverviewWiringAlternates
Switching Split Power Supply ± 12V 500mA - Adafruit - 2591

Wall-plug split-rail switching supply providing +12VDC and −12VDC simultaneously at up to 500mA per rail (24V total differential). Useful for op-amp and audio circuits requiring a symmetric supply.

Parts tray full · 5 max · remove a part to add another
Switching Split Power Supply ± 12V 500mA — Adafruit — 2591

Offers

  • Adafruit$8.97
  • ?DigiKey$14.95

Offers

  • Adafruit$8.97
  • ?DigiKey$14.95

Pinout

Logical pinout · physical placement not verified
SWITCHING SPLIT POWER Black cable +12VDCWhite cable -12VDCShared ground reference5.5mm2.1mm DC barrel plugs
  • Black cable +12VDC
    Type · Power
  • Shared ground reference
    Type · Ground
  • White cable -12VDC
    Type · Power
  • 5.5mm2.1mm DC barrel plugs
    Type · Power
PinType
Black cable +12VDCPower
Shared ground referenceGround
White cable -12VDCPower
5.5mm2.1mm DC barrel plugsPower
Logical pinout · physical placement not verified
SWITCHING SPLIT POWER Black cable +12VDCWhite cable -12VDCShared ground reference5.5mm2.1mm DC barrel plugs

Pin details

4 connections
  1. Black cable +12VDC
    Power
  2. Shared ground reference
    Ground
  3. White cable -12VDC
    Power
  4. 5.5mm2.1mm DC barrel plugs
    Power

Start wiring

3.3 V · 5 V · Module

The family now includes 9 V wall adapters at 650 mA, 1 A and 2.55 A. The voltage class matches, but current headroom, plug region, connec…

Module pins: Shared ground reference. Schematik maps them to your board in the app.

Power supplies

146 other options

Wall adapters (5V–24V), adjustable and fixed buck/boost/buck-boost converters (MT3608, LM2596-class), USB-C PD triggers (HUSB238), breadboard supplies, DIN-rail units and passive barrel-jack adapters.

View all 146
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  • 12V DC 1000mA (1A) regulated switching power adapter - UL listed visual preview

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  • 150W DC-DC Converter 24V@6A visual preview

    150W DC-DC Converter 24V@6A

  • 2-way Fast Charge Buck Module (Compatible with Raspberry Pi 4B & Jetson Nano) visual preview

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    2.1mm 5VDC Barrel Jack to USB C Adapter

  • 2.1mm DC Barrel Jack to 1st Generation MagSafe Adapter visual preview

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  • 2.1mm DC Barrel Jack to 2nd Generation MagSafe Adapter visual preview

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Related groups

4 groups
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Batteries

9V alkaline cells, CR2032 coin cells, 3.7V LiPo packs (1000–1200mAh), 7.4V 2S LiPo, 18650 Li-ion holders (1–6 cells), AA/AAA holders in every configuration, and snap leads with barrel adapters.

Power · Batteries · 104 parts

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Charging

Single-cell LiPo chargers (TP4056, MicroUSB/Type-C modules), charger/booster combos (PowerBoost 500/1000, Lipo Rider Plus 5V/2.4A), I2C fuel gauges (MAX17048, LC709203F) and Qi wireless charging coils.

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3.8 / 1.3mm or 3.5 / 1.1mm to 5.5 / 2.1mm DC Jack Adapter Cable visual preview

Solar

Solar panels from 1.5V 250mA flexible film to 18V 10W polysilicon, MPPT solar power managers (DFRobot 5V and 9V/12V/18V, Waveshare 6V–24V), bq25185 charger boards and LTC3588 energy-harvesting breakouts.

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1.75mm PLA (1kg) - Black visual preview

3D printing

DFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.

Tools & prototyping · 3D printing · 53 parts