Top 11 Power Supply Wholesalers in the USA

Last updated: November 11, 2022 at 15:57 pm

It can be tough to find a suitable power supply wholesaler. With hundreds of options available, it’s hard to know who to trust. Don’t worry, we’ve done our research for you.

A power supply is an essential component of any electronic device. It’s responsible for converting AC into the DC power necessary for devices to function. Different power supply companies perform to serve this demand. Today, we’ll discuss the top 11 power supply wholesalers in the United States so that you can make a practical and knowledgeable decision about who to choose. These companies have a proven track record of quality and customer service.

Therefore, if you need a reliable supplier, look no further than these fine businesses.

Prowin Power

Prowin Power Supply Company is a leading one-stop provider of high-quality power supplies and batteries. Prowin has been in business since 2013 and has built a reputation for excellent customer service. We offer competitive prices on our products and have been developing power supply solutions to meet the needs of our customers. People can use Prowin’s products in various industries, including medical, IT, renewable energy, etc.

Main products and Applications:

  • Wall mount power adapter
  • AC/DC power adapters
  • switching power supply
  • PD power adapter
  • Meanwell power supply
  • interchangeable power
  • desktop power adapter

Why Prowin Power?

  • Fast shipping
  • Innovations
  • Excellent customer service
  • Comprehensive product selection
  • Affordable prices
  • Years of experience in the market
  • Alerts on new products
  • Supportive blogs for power solution tips

Most importantly, we offer a 2 to 3 years warranty on all of their products. In addition, we promise to continue providing innovative products and excellent customer service, delivering comprehensive power supply solutions and value to our dear customers. So if you’re seeking a dependable and economical power supply wholesaler, Prowin is an excellent option.

Power Stream Technologies

From Power Stream

Power Stream Technologies has been a trusted provider of quality power supplies since 1992. They offer one of the most extensive selections of DC-DC converters, AC-DC power supplies, LED drivers, and more. Power Stream’s team is passionate about customer service. It offers technical support to ensure you get the most out of its products.

This company currently has over a thousand clients from different parts of the world, including Asia, South America, Canada, the United Kingdom, Russia, and India. Their products are available, and can also customize power supplies to meet specific needs. In addition, Power Stream guarantees quick delivery of all of its products.

Main products and Applications:

  • AC/DC power adapters
  • Battery chargers
  • DC/DC converters
  • Inverters
  • Frequency converters
  • Custom products
  • Desktop power supply

Delta Electronics

From DELTA American

Originally in Taiwan, Delta Electronics is a global leader in power supplies and thermal management solutions. Delta proudly offers various products, including AC/DC power adapters, UPS systems, DC/DC converters, and many more. In addition, Delta Electronics is known for its innovative products, including the world’s first digital switching power supply.

Delta was founded in 1971 and has since expanded to approximately 200 locations worldwide. As a result, they have an extensive global reach with a strong focus on sustainability. Delta Electronics is an excellent option if you’re looking for a reliable and sustainable power supply wholesaler.

Main Products and Applications:

  • Inductors
  • Transformers
  • Automotive Chargers
  • Power Adapters
  • Power Modules
  • Embedded Power
  • External Power
  • Industrial Power Supply
  • Medical Power Supply
  • Industrial Battery Charging
  • UPS Systems

MEGA Electronics Inc.


MEGA Electronics Inc. is one of the most reliable power supply manufacturers and suppliers in the United States. In addition, mega provides custom design services to meet specific customer requirements. They dedicate their career to offering a one-stop solution to all your power needs with their high-quality products and services, designing, manufacturing, and delivering a full range of standard and custom power supplies.

MEGA was founded in 1994 and had been performing for thousands of customers worldwide. With their ISO 9001:2008 certification, you can be sure that their products are one of the finest.

Main products and Applications:

  • AC/DC Power Supplies
  • Power cords
  • Extension cords
  • DC/DC converters
  • ITE power supplies
  • Medical power supplies

Advanced Energy Solutions

Picture from Advanced Energy

Advanced Energy Solutions is a comprehensive power solutions provider well-known worldwide. With over 30 years of experience in the power supply industry, Advanced Energy has become a trusted name for quality and customer service

The company has devoted decades of research and development to create some of the market’s most technologically advanced power supplies. Their products are available for various industries, including telecommunications, medical, military, aerospace, and more. Advanced Energy’s mission is to provide its customers with reliable, efficient, cost-effective power solutions.

Main products and Applications:

  • DC power generator
  • semiconductor
  • Low and Mid Frequency power systems
  • Pulsed DC systems
  • High voltage power supplies
  • High voltage amplifiers
  • Power controllers
  • Electrostatic products

Astrodyne TDI

From Astrodyne TDI

Astrodyne TDI is a global manufacturer of custom and standard power solutions. With over 60 years of experience in the industry, Astrodyne offers one of the most extensive selections of ac-dc power supplies, dc-dc converters, EMI filters, and more. You can find Astrodyne’s products in semiconductor equipment and life-saving industries, including medical, military, aerospace, and industrial.

Astrodyne has been providing innovative power solutions that meet the ever-changing needs of its customers. Their team of engineers is always at the forefront of power technology, developing new products and customizing existing ones to meet the specific needs of their clients.

Main products and Applications:

  • AC/DC power supplies
  • DC/DC power supplies
  • External adapter
  • EMI/EMC filters
  • Coolant types
  • UPS


From CUI Inc

CUI Inc is a global technology company specializing in designing and manufacturing electronic components and solutions. Their product portfolio includes power supplies, motion control & actuators, sensors, sound, interconnects, and microelectronics. CUI serves customers in a wide range of global markets, including aerospace & defense, automotive, computing, consumer electronics, industrial, medical, and solar power. CUI’s strength lies in its ability to provide a one-stop solution for all your electronic needs. Their engineers constantly innovate and develop new products to meet the market’s ever-changing demands.

In addition, CUI provides custom design services to create unique solutions for its customers. Their global reach and extensive experience in the industry make them one of the most trusted names in the business. They always look forward to providing the best customer experience and creating long-term relationships with their clients.

Main products and Applications:

  • External AC/DC power supplies
  • External adapter
  • Desktop power supplies
  • Wall plugs
  • Custom adapters
  • Internal AC/DC
  • Board mount
  • DIN Rail
  • DC/DC converter
  • IGBT Driver

TDK-Lambda Americas

From TDK-Lambda Americas

TDK-Lambda is an internationally recognized provider of power solutions. In 2008, TDK-Lambda Americas Inc. acquired Lambda Electronics, Inc., Electronic Measurements, Inc., and Innovate Technologies. Since then, TDK-Lambda has provided high-quality power solutions to various industries, including medical, military, aerospace, and more. Accumulating more than 80 years of experience in the industry, TDK-Lambda is one of the most trusted names regarding quality and customer service.

TDK-Lambda’s products are known for their reliability and efficiency. They have been a consistently growing manufacturer of power supplies. TDK-Lambda is certified with ISO9001, ISO14001, and ISO 13485. They are committed to keeping its good reputation as a world-class company in the power supply industry.

Main products and Applications:

  • AC-DC power supplies
  • DC-DC converters
  • High voltage power supplies
  • Programmable power supplies
  • Custom power solutions

Design Criteria Inc


Design Criteria Inc is an innovative power solution provider that offers power electronic design and a wide range of products and services. Since 1999, they have gained a reputation as one of the most reliable and trustworthy companies regarding value and customer service.

Carl Belnap, the founder of Design Criteria Inc, has more than 30 years of experience in the power electronic design industry. Belnap is an expert in his field and has been instrumental in developing many new technologies. Under his leadership, Design Criteria Inc has become one of the sustainable providers of power solutions.

Main products and Applications:

  • DC/DC Converters
  • High-Efficient Military DC/DC Converters
  • Lightweight DC/DC Converters
  • DC/DC Converters for Unmanned Aerial Systems (UAS)
  • Rugged DC/DC Converters
  • DC/DC and AC/DC Converters for Harsh Environments
  • High Voltage Klystron Power Supplies
  • High Voltage TWT Power Supplies
  • Modular Power Supplies
  • Low noise
  • Battery chargers
  • Health monitoring
  • Remote control

Mingston Electronics

From Mingston

Mingston Electronics is an exclusive North American distributor of MEC group in Taipei, a world-leading manufacturer of standard and custom AC/DC and DC/DC power supplies and cable assemblies. Mingston Electronics has been in business since 1988 and promises to perform fast and dependable delivery of the finest products at the best price.

Mingston Electronics has highly trained and experienced engineers who are always ready to help their customers with any power supply needs.

Main products and Applications:

  • AC/DC power supplies
  • DC/DC power supplies
  • Custom cables & Cable assemblies
  • Switching power supply
  • Power adapters
  • Battery chargers
  • Specialty products

Triad Magnetics


Triad Magnetics is a giant manufacturer of power supplies, particularly transformers and inductors. They have satisfied consumers for over 75 years, offering innovative magnetic technology through their wide selection of products from commercial to medical, military, aerospace, and industrial electronics. Triad Magnetics continues its journey to be the first choice transformer supplier as it actively collaborates with its customers, providing prompt and courteous services.

Triad Magnetics has thousands of designs that can be modified to meet the customer’s power requirements. They also offer a wide range of standard products for immediate delivery, making them an excellent choice for quick and reliable solutions.

Main products and Applications:

  • AC/DC transformers
  • Power transformers
  • Wall Plug-in transformers
  • Batteries
  • Isolation transformers
  • Current sense transformers
  • LED Drivers
  • Inductors and chokes
  • Power & audio transformers


Your power supply provider can be one of the best investments for your home or business. These 11 power supply wholesalers are all reputable and reliable companies that can promise you the best products and services. With the right supplier, you can be sure that you and your business will have a reliable power source when necessary. Remember to consider the company’s experience, credentials, and reputation. Take a look at reviews and prices before making a purchase. And finally, make sure that you understand the terms and conditions of the agreement before signing any contract. By following these tips, you can have the best possible power supply provider according to your satisfaction.

Do you already have a power supply vendor? What was your experience working with them? Let us know in the comments below!

Are you trying to get the right power supply vendor? Let a reliable supplier provide you with high quality power supply solutions.

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