1.800.966.PSUI (7784)
508.384.1419
(outside the U.S.)
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Power Sources Unlimited is
ISO 9001:2008 Registered

Welcome to Power Sources Unlimited

Power Sources Unlimited, Inc. is a premier ISO 9001: 2008 supplier in North America for AC-DC Power Supplies, DC-DC Converters, DC UPS, Industrial Power, Medical Power, LED Power, Green Power and Telecom/Wireless Power for small, medium and large quantity OEM customers. Our commitment to selling high quality and synergistic power conversion products and dedication to the customer have positioned us as the supplier of choice in North America for NEW design requirements.
Power Sources Unlimited

New Product Showcase


Traco Power TRV-1 Series Cincon CQB100-110S Series Powerstax FC501 Series Tri-Mag DG120 Series
Traco TRV-1 Series Cincon CQB100-110S Series Powerstax FC501 Series Tri-Mag DG120 Series
  • Semi-regulated output (load)
  • Industry standard pinout
  • High efficiency up to 87%
  • I/O isolation voltage 3000VDC
  • Operationally reliable up to 5‘000m altitude
  • Operating temperature range -40°C to +85°C
  • 3-year product warranty
  • Efficiency to 92%
  • 100W Isolated output
  • 200KHz Switching frequency
  • 3:1 Input range
  • Regulated outputs
  • Remote on/off
  • CE Mark meets 2004/108/EC
  • UL60950-1 Approval
  • Operates directly from fuel cell
  • High power density up to 5.53W/cm³
  • Efficiencies from 86–91%
  • Over-voltage, under-voltage and short-circuit protection
  • Active load sharing
  • Remote On/Off
  • No need for “master / slave”
  • Green Energy compliant 2″x 4″ package
  • Single output
  • Suitable for both Medical and ITE applications
  • High peak load
  • Power density 11W/cu in.
  • Efficiency >90%
  • Operating temperature –20°C to +70°C

PSUI Welcomes NuTec Marketing, Inc.


Power Sources Unlimited, Inc (PSUI) is pleased to announce the addition of NuTec Marketing, Inc. to our expanding North American sales representative network. Headquartered in Dunnellon, Florida, NuTec Marketing Inc. will be servicing PSUI’s customers in the Florida and Georgia areas. Click here to view NuTec Marketing's contact information or visit them at www.nutecmarketing.com


PSUI Partners with Tri-Mag, LLC.

Tri-Mag, LLC.


Power Sources Unlimited, Inc continues to expand it’s portfolio of highly-reliable, configurable and cost-effective power solutions with the announcement to partner with Tri-Mag, LLC. Tri-Mag has been manufacturing quality power conversion products, from EMI filters to power supplies since 1980. Offering a wide selection of standard power electronics and power systems along with custom design services to ensure we have the solution to meet the requirements of your application.
Click here to view our Tri-Mag line card.


PSUI Partners with ABSOPULSE Electronics Ltd.

ABSOPLUSE Electronics Ltd.


Power Sources Unlimited, Inc is pleased to announce that we have partnered with ABSOPULSE Electronics Ltd. With this partnership Power Sources continues to grow it’s portfolio of highly-reliable, configurable and cost-effective power solutions. ABSOPULSE Electronics Ltd. specializes in the design, development and manufacture of high performance switch-mode power supplies for rugged and extreme environments.
Click here to view our ASBOPULSE linecard.


UL/EN 60601-1 3rd Edition and 2x MOPP Approved Medical Power Solutions

Power Sources Unlimited Medical Application

Power Sources Unlimited, Inc. carries a vast selection of AC-DC power supplies and DC-DC converters with UL/EN 60101-1 3rd Edition and 2x MOPP approvals for patient vicinity medical and dental applications. Our line of power supplies are designed by skilled engineers to achieve the required low leakage current and reinforced isolation specifications required for medical applications, Click here to view our medically approved power conversion offerings.


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Power Sources Unlimited, Inc.
is a member of PSMA