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Use Code: FREESHIP for free economy shipping on all orders $49+
Use Code: FREESHIP for free economy shipping on all orders $49+

Isolation Transformer

117VAC to 117VAC
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Adjustable DC Power Supply

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Variable Transformer (NEW) 10 Amp (1000 Watts); 0~130VAC Output w/ISOLATION & LED Volt Meter - AC-DC PowerShack

Variable Transformers

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AC-AC Power Supplies

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DC Power Extension Cables

Perfect solutions for LED lighting, security cameras, & web cams
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DC plug size conversion

An easy DIY way to change the DC 2.1x5.5mm plug to another size
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Variable Transformer 10 Amp (1000 Watts); 0~130VAC Output w/ISOLATION; Part # SC-10T - AC-DC PowerShack

Variable Transformer 10 Amp (1000 Watts); 0~130VAC Output w/ISOLATION

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$199.00
$199.00 - $199.00
$199.00
$180.00
$180.00 - $180.00
$180.00
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Power DC Extension Cables

  • 3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK - AC-DC PowerShack
    HDCQ3 3ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG - AC-DC PowerShack
    $2.50 - $2.50
    $2.50
    $2.50 - $2.50
    $2.50

    3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ3 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 3 ft Gauge: 20 BLACK ...

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    $2.50 - $2.50
    $2.50
    $2.50 - $2.50
    $2.50
  • 3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE - AC-DC PowerShack
    HDCQ3W 3ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG, WHITE - AC-DC PowerShack
    $2.50 - $2.50
    $2.50
    $2.50 - $2.50
    $2.50

    3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ3W 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 3 ft Gauge: 20 WHIT...

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    $2.50 - $2.50
    $2.50
    $2.50 - $2.50
    $2.50
  • 6ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK - AC-DC PowerShack
    HDCQ6 6ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG - AC-DC PowerShack
    $3.50 - $3.50
    $3.50
    $3.50 - $3.50
    $3.50

    6ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ6 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 6 ft Gauge: 20 BLACK...

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    $3.50 - $3.50
    $3.50
    $3.50 - $3.50
    $3.50
  • 6ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE - AC-DC PowerShack
    HDCQ6W 6ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG, WHITE - AC-DC PowerShack
    $3.50 - $3.50
    $3.50
    $3.50 - $3.50
    $3.50

    6ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ6W 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 6 ft Gauge: 20 WHITE...

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    $3.50 - $3.50
    $3.50
    $3.50 - $3.50
    $3.50
  • 12ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK - AC-DC PowerShack
    HDCQ12 12ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG - AC-DC PowerShack
    $5.30 - $5.30
    $5.30
    $5.30 - $5.30
    $5.30

    12ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ12 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 12 ft Gauge: 20 BLAC...

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    $5.30 - $5.30
    $5.30
    $5.30 - $5.30
    $5.30
  • 12ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG, WHITE - AC-DC PowerShack
    HDCQ12W 12ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG, WHITE - AC-DC PowerShack
    $5.30 - $5.30
    $5.30
    $5.30 - $5.30
    $5.30

    12ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG, WHITE

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ12W 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 12 ft Gauge: 20 WHI...

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    $5.30 - $5.30
    $5.30
    $5.30 - $5.30
    $5.30
  • 25ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK - AC-DC PowerShack
    HDCQ25 25ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG - AC-DC PowerShack
    $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50

    25ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ25 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 25 ft Gauge: 20 BLAC...

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    $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50
  • 20ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE - AC-DC PowerShack
    HDCQ20W 20ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG, WHITE - AC-DC PowerShack
    $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50

    20ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ20W 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 20 ft Gauge: 20 WHI...

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    $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50
  • 50ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK - AC-DC PowerShack
    HDCQ50 50ft 2.1mm x 5.5mm DC Plug Extension Cable, 20 AWG - AC-DC PowerShack
    $13.00 - $13.00
    $13.00
    $13.00 - $13.00
    $13.00

    50ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG BLACK

    PHC Enterprise, Inc.
    5+ in stock

    Part #: HDCQ50 2.1mm x 5.5mm Extension Cable for Power Adapter Female Jack: 2.1mm x 5.5mm Male Plug: 2.1mm x 5.5mm Length: 50ft Gauge: 20 BLAC...

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    $13.00 - $13.00
    $13.00
    $13.00 - $13.00
    $13.00
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Collection list

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Take a look at our universal power supplies

Selectable Multi-voltage Power Supply

w/6-interchangble DC plugs

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Universal Selectable-Voltage AC-to-DC Adapter: 3VDC-12VDC @ 2.5 Amp

Featured collection

  • Featured Closeout Items
  • 3~15VDC @ 2A DC Regulated Switching Tattoo Power Supply; Part # 5486 - AC-DC PowerShack
    Save 40% Save %
    $20.00
    $20.00 - $20.00
    $20.00
    $12.00
    $12.00 - $12.00
    $12.00

    3~15V DC @ 2A DC Regulated Switching Tattoo Power Supply

    Superior Tattoo
    5+ in stock

    Part #: 5486 Closeout Special Input Voltage: 90~120VAC Output Voltage: 3~15VDC Output Current: 2A Requires 1/4" foot switch (H4-M) to operate. Sol...

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    $20.00
    $20.00 - $20.00
    $20.00
    $12.00
    $12.00 - $12.00
    $12.00
    Save 40% Save %
  • 3~15VDC @ 2A DC Regulated Switching Tattoo Power Supply; Part # PS-10T - AC-DC PowerShack
    3~15VDC @ 2A DC Regulated Switching Tattoo Power Supply; Part # PS-10T - AC-DC PowerShack
    Save 50% Save %
    $34.99
    $34.99 - $34.99
    $34.99
    $17.50
    $17.50 - $17.50
    $17.50

    3~15VDC @ 2A DC Regulated Switching Tattoo Power Supply

    PHC Enterprise, Inc.
    5+ in stock

    Part #: PS-10T  Closeout Special Input Voltage: 90~120VAC Output Voltage: 3~15VDC Output Current: 2A Precision 10-Pot Turn dial Requires 1/4" foot...

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    $34.99
    $34.99 - $34.99
    $34.99
    $17.50
    $17.50 - $17.50
    $17.50
    Save 50% Save %
  • Adjustable 3~15VDC @ 4A DC Regulated Switching Power Supply (BLACK); Part # APS-415 - AC-DC PowerShack
    Adjustable 3~15VDC @ 4A DC Regulated Switching Power Supply (BLACK); Part # APS-415 - AC-DC PowerShack
    Save 25% Save %
    $39.99
    $39.99 - $39.99
    $39.99
    $30.00
    $30.00 - $30.00
    $30.00

    Adjustable DC Regulated Switching Power Supply (BLACK) 3~15VDC @ 4A

    PHC Enterprise, Inc.
    5+ in stock

    Part #: APS-415 Input Voltage: 117VAC Output Voltage: Adjustable 3~15VDC Output Current: 4A W/Banana Jacks Color: Black

    $39.99
    $39.99 - $39.99
    $39.99
    $30.00
    $30.00 - $30.00
    $30.00
    Save 25% Save %
  • Adjustable 3~15VDC @ 4A DC Regulated Switching Power Supply (YELLOW); Part # APS-415Y - AC-DC PowerShack
    Adjustable 3~15VDC @ 4A DC Regulated Switching Power Supply (YELLOW); Part # APS-415Y - AC-DC PowerShack
    Save 25% Save %
    $39.99
    $39.99 - $39.99
    $39.99
    $30.00
    $30.00 - $30.00
    $30.00

    Adjustable DC Regulated Switching Power Supply (YELLOW) 3~15VDC @ 4A

    PHC Enterprise, Inc.
    5+ in stock

    Part #: APS-415Y Input Voltage: 117VAC Output Voltage: Adjustable 3~15VDC Output Current: 4A W/Banana Jacks Color: YELLOW

    $39.99
    $39.99 - $39.99
    $39.99
    $30.00
    $30.00 - $30.00
    $30.00
    Save 25% Save %

Blog posts

  • When you may need an isolation transformer
    May 1, 2023

    When you may need an isolation transformer

    An isolation transformer can help reduce RF power noise in an electrical system. An isolation transformer is designed to provide electrical isolation between the input and output circuits, typically by using a transformer with a 1:1 ratio. This isolation helps...

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Let customers speak for us

from 47 reviews
DC Barrel Plug Adapter to 6.3 x 3.0mm plug from 2.1 x 5.5mm
Great service

Got the part I needed fast and at a great price.

Mark Gray
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

The package FINALLY arrived! Looks like they woke up the ponies for the express. Works perfectly. Thanks.

Howard Elwell

Howard Elwell
DC Barrel Plug Adapter to 6.3 x 3.0mm plug from 2.1 x 5.5mm
2~24V DC @ 7A DC Regulated Switching Power Supply
Fast shipping

Item arrived faster then expected, packaged was very well packed no damages very happy with this item fan is very quiet I use it to stabilize my dc battery running my dc amplifier works very well with no distortions very satisfied with my purchase 73s .

Tyress Akiyama
2~24V DC @ 7A DC Regulated Switching Power Supply
1000VA Isolation Transformer, 117VAC to 117VAC
Highly Recommended!

I added this to our home audio system. We live in a condo building in Boston with multiple units in the building, and wanted some level of protection and filtering of likely a dirty AC source, without spending a fortune. I perceive an improvement in sound particularly digital sources, and feel more comfortable our equipment is well protected. Highly recommended and I consider this a bargain.

Linc
1000VA Isolation Transformer, 117VAC to 117VAC
AC-AC Power Supply 24V AC @ 1250mA; 2.1 x 5.5mm
Great

Great

Joaquin Cervantes
AC-AC Power Supply 24V AC @ 1250mA; 2.1 x 5.5mm
AC-AC Power Supply 12V AC @ 1000mA; 2.1 x 5.5mm
12V AC @ 1000mA Power Supply 2.1 x 5.5mm

I purchased this for my fiber optic Hummingbird lamp because it has a color wheel synchrous motor in which requires the above power adapter. This company is the only company I found that carries these adapters. I bought one, and now have bought 2 more, one for my sister who has the same lamp and another for me, because I recently purchased another fiber optic lamp. Hans was very helpful and I truly appreciate the help he provided. Thank you Hans!

Marcia Kern
AC-AC Power Supply 12V AC @ 1000mA; 2.1 x 5.5mm
1000VA Isolation Transformer, 117VAC to 117VAC
Essential tool for AC powered R&D works

This isolation offers good value on an essential tool that is required for conducting AC powered experiments where isolated ground is essential, such as monitoring wave forms. It works great with no noise. For the price, it is a great buy.

Sing Koo
1000VA Isolation Transformer, 117VAC to 117VAC
6ft 2.5mm x 5.5mm DC Power Extension Cable, 20 AWG
Nice cable

Like the 20AWG

Daniel Griesbach
6ft 2.5mm x 5.5mm DC Power Extension Cable, 20 AWG
AC-DC Linear Power Supply 12V DC @ 500mA; 2.5 x 5.5mm (+) center polarity
Great Product

Great Product, and Quick shipping. Thank You!!!

Mike Brighty
AC-DC Linear Power Supply 12V DC @ 500mA; 2.5 x 5.5mm (+) center polarity
300VA Isolation Transformer, 117VAC to 117VAC
DUD! Amended

Customer support was great. New unit received and works fine. Very co-operative.

Tim Stuart
300VA Isolation Transformer, 117VAC to 117VAC
AC-DC Linear Power Supply 12V DC @ 50mA; 2.1 x 5.5mm (+) center polarity
It works

Used supply with 12vdc relay to make a trigger for amplifier. Needed relay because supply has a capacitor that takes a long time to bleed down in this application.

Martin Fox
AC-DC Linear Power Supply 12V DC @ 50mA; 2.1 x 5.5mm (+) center polarity
6ft 1.35mm x 3.5mm DC Power Extension Cable, 20 AWG
LED Lighting issue solved!

These cables I ordered saved what would have become scrap ( led lighting kit ) as nobody else had this size extension adapter.

James Szekely
6ft 1.35mm x 3.5mm DC Power Extension Cable, 20 AWG
3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE

Right product and fast delivery.

Dylan Schneider
3ft 2.1mm x 5.5mm DC Power Extension Cable, 20 AWG WHITE
300VA Isolation Transformer, 117VAC to 117VAC
ISO transformer

Great fast service, product does the job!

Lonnie Utley
300VA Isolation Transformer, 117VAC to 117VAC
6ft 2.5mm x 5.5mm DC Power Extension Cable, 20 AWG
Cables

Quick ship and good parts. Thanks

Phillip Rayer
6ft 2.5mm x 5.5mm DC Power Extension Cable, 20 AWG