Skip to content
PROMO CODE: FREESHIP for free economy shipping w/orders $49+
CODE: FREESHIP for free economy shipping w/orders $49+
12V 1000mA AC-AC Linear Power Adapter 2.1 x 5.5mm plug

AC-AC Linear Power Supply

Professional-grade AC-AC Linear Power Supplies designed for applications requiring clean, traditional transformer-based power. Our AC-AC adapters feature a robust internal transformer design, ideal for sensitive electronics, audio equipment, and vintage repairs.

  • Input: 120 VAC @ 60 Hz (Standard US Plug)

  • Safety: UL/cUL or ETL Approved & RoHS Compliant

  • Design: Durable wall-mount or desktop transformer housing.  Also available center tap (raw) transformer.

Important Technical Note: These are non-regulated linear power supplies. On an open circuit (no load), the output voltage will typically measure 1.0V to 1.5V higher than the rated voltage. The voltage will drop to the stated level once the appropriate load is applied.

Filters

PHC Enterprise 24VCT 24V/12V AC transformer with 0-12V-24V tap, 2A capacity, designed for 117VAC to 24VAC or 12VAC conversion
PHC Enterprise 24VCT 24V and 12V AC transformer, 2A capacity, showing the compact power supply unit with wiring terminals. Save 9% Save %
$22.00
$22.00 - $22.00
$22.00
$20.00
$20.00 - $20.00
$20.00

24VCT 24V, 12V Transformer 0-12V-24 CT @ 2A 117VAC to 24VAC or 12VAC

PHC Enterprise
5+ in stock

Part #: PX-24C2 CENTER-TAPPED POWER TRANSFORMERS Primary Input Voltage: 117VAC @ 50-60Hz Output Voltage 24V CT @ 2 Amp Rated Output 24VAC or 12VAC...

View full details
$22.00
$22.00 - $22.00
$22.00
$20.00
$20.00 - $20.00
$20.00
Save 9% Save %
24VCT 12V AC transformer by PHC Enterprise, 3A power supply for 24VAC or 12VAC applications, with dual voltage output and center tap
PHC Enterprise 24VCT transformer for AC power supply, providing 12V-0-12V CT at 3A from 1170VAC to 24VAC or 12VAC Save 21% Save %
$28.00
$28.00 - $28.00
$28.00
$22.00
$22.00 - $22.00
$22.00

24VCT 24V, 12V Transformer 12V-0-12V CT @ 3A 1170VAC to 24VAC or 12VAC

PHC Enterprise
5+ in stock

Part #: PX-24C3 CENTER-TAPPED POWER TRANSFORMERS Primary Input Voltage: 117VAC @ 50-60Hz Output Voltage 24V CT @ 3 Amp Rated Output 24V AC or 12V ...

View full details
$28.00
$28.00 - $28.00
$28.00
$22.00
$22.00 - $22.00
$22.00
Save 21% Save %
24VCT 24V and 12V AC/AC power transformer by PHC Enterprise, 0-12V-24V CT @ 5A, for 117VAC to 24VAC or 12VAC applications.
24V, 12V AC/DC transformer by PHC Enterprise, 5A power supply converting 117VAC to 24VAC or 12VAC, model PX-24C5. Save 11% Save %
$45.00
$45.00 - $45.00
$45.00
$40.00
$40.00 - $40.00
$40.00

24VCT 24V, 12V Transformer 0-12V-24V CT @ 5A 117VAC to 24VAC or 12VAC

PHC Enterprise
5+ in stock

Part #: PX-24C5 CENTER-TAPPED POWER TRANSFORMERS Primary Input Voltage: 117VAC @ 50-60Hz Output Voltage 24V CT @ 5 Amp Rated Output 24V AC or 12V...

View full details
$45.00
$45.00 - $45.00
$45.00
$40.00
$40.00 - $40.00
$40.00
Save 11% Save %
Close-up detail of 2.1mm x 5.5mm center-positive barrel connector plug for SW-0941A 9V DC 5A power supply.
12V AC-AC power adapter by PHC Enterprise, Inc., with 5000mA output, 2.1mm x 5.5mm connector, desktop transformer for electronics Sold out
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00

12V AC-AC Power Adapter 5000mA (5A) | 2.1mm x 5.5mm Desktop Transformer | AC-125AC

PHC Enterprise, Inc.
Out of stock

12V AC-AC Linear Wall Transformer — 5000mA (5A) Part AC-125AC The AC-125AC is a desktop-style linear AC-to-AC power adapter delivering 12V AC outpu...

View full details
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00
Sold out

Let customers speak for us

from 339 reviews
Adjustable DC Regulated Switching Power Supply (Black) 3-15VDC 4A | APS-415

Adjustable DC Regulated Switching Power Supply (Black) 3-15VDC 4A | APS-415

Josh Dagenais
DC Inline Rocker Switch Cable, 20 AWG, 2.1 x 5.5mm, 12 Inch | RC-T2155
Love it!!

I will be ordering more!

A Adkins
DC Barrel Adapter, Female 2.1mm x 5.5mm to Female 2.1mm x 5.5mm, 20 AWG | DC-2Y

Arrived quickly and was the exact thing I needed to power an AC to AC VAC female adapter.

Louise
12V 1200mA Floating-Smart Battery Charger (1.2A, 2.5mm x 5.5mm Center Positive) | FC-1212B

Works as noted

Chris Thorson
12V AC-AC Power Adapter 1000mA (1A), 2.1mm x 5.5mm | AC-121A
Awesome experience

Web site was very helpful to make sure I had the right replacement plug and it arrived in a few days.
Had to cut the plug end off to replace a hard wired plug from an old Halloween decoration but it worked and saved a 25 year old holiday decoration.

William Barwig
12V 800mA AC-DC Linear Power Supply, Negative Center | PV-12800NL

12V 800mA AC-DC Linear Power Supply, Negative Center | PV-12800NL

Jennie Doran
16.5V 40VA AC-AC Transformer for Security Systems & Alarms | AC-1624SA

It works fine

Tom
25 ft. 18/3 AC Power Extension Cord
25 ft. 18/3 AC Power Extension Cord

exactly as described! good product, good shipping.

glenc
12V AC-AC Power Adapter 1000mA (1A), 2.1mm x 5.5mm | AC-121A

12V AC-AC Power Adapter, 1000mA (1A) Wall Transformer, 2.1mm x 5.5mm Plug | Model AC-121A

Samuel Mangum
DC Barrel Plug Adapter to 6.3 x 3.0mm plug from 2.1 x 5.5mm

DC Barrel Plug Adapter to 6.3 x 3.0mm plug from 2.1 x 5.5mm

Robert Chase
Variable Isolated Transformer 10A (1000W) 0–130VAC with LCD Voltmeter | SC-10T-2
What an INCREDIBLE deal, what service!!! I'm be buying more!

I bought the Variac/isolation transformer combo. FOR STARTERS: NOBODY ELSE MAKES THIS COMBO with a genuine isolation transformer. And that fact that it's $200 out the door is insanity. My only advice with the unit would be to double check the voltage display against a multimeter; I find my display to be about 5V lower than the actual output and adjusted accordingly.

This item was packaged more securely than a nuclear warhead. Seriously, the packing job is a masterclass in transportation and logistical safeguards.

In short--I rarely leave reviews. I felt I HAD to for this product. If you're not sure because it's a newer item/company, don't worry. They are LEGIT and they are INCREDIBLE.
One more side note--customer service response is insanely fast also. I emailed a question on a SUNDAY EVENING and got an answer.

GREAT, domestically-owned small business I will support again.

Dan-Owner, HiFi Hopes LLC

Dan-Owner, Hifi Hopes Vintage Audio Restoration
16V AC-AC Power Adapter, 1250mA (1.25A) Wall Transformer, 2.1mm x 5.5mm Plug, AC16V Linear Power Supply | AC-1611A
Great service and communication

Got my power supply on time and it’s a great deal!

Roma Solomatov
12V 500mA AC-DC Linear Power Supply (2.1mm x 5.5mm) | PV-1250A
Replacement for Morpheus Droptune Pedal

Needed a replacement for a few guitar pedals. This is a perfect replacement for many pedals. Just verify center polarity and amp requirements.

Brandon Pockat
500VA Isolation Transformer 117VAC to 117VAC | ISO-500
Works. Looks good too.

More compact with the toroid transformer.

James Bradshaw
Professional 1000VA Isolation Transformer | 117VAC to 117VAC - ISO-1000
Professional 1000VA Isolation Transformer | 117VAC to 117VAC - ISO-1000

Work as described.

Henry Huynh