Linear DC Power Supplies

Quality Transformer and Electronics’ power supplies are custom designed to meet the specific needs of our customer’s products.

  • Rackmount
  • Stand-alone
  • Line voltage
  • High voltage
  • Air, water, or oil cooled
  • Linear regulated DC Power supplies
  • Microwave supplies
  • Traveling wave tube (TWT) power supplies

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All of our units are built-to-order, in either production-run or prototype quantities. Contact us to determine your specifications and get your requirements down. If you don't know everything, that is okay, we can help. Call us at US +1 408-263-8444, or email us by clicking the button below:

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ISO 9001:2015 icon These transformer are NRTL to UL 506 and 1561. Find out more about our certifications by clicking here: More on certifications

Build configurations and capabilities

Electrical Characteristics

500W up to 2MW

Low/Med voltages = 120V up to 5kV

High voltages = up to 350kVDC


Enclosures (NEMA 1, 3, 4, 4X)


Circuit breakers

EMO switches





Ring-lug compatibility




Test up to 560 kW

Examples of Linear DC Power Supplies


144 kW Power Supply Assembly

3-Phase, 60Hz

Input = 480Vrms

Output = 300/280/260/240 VDC @ 480 ADC

NEMA4X 316 stainless steel enclosure

NRTL to UL 1561, 508A


30 kW Power Supply Assembly

3-Phase, 60Hz

Input = 208Vrms

Output = 2x 400VDC @ 25ADC

NEMA1 enclosure, Circuit protection

NRTL to UL 1561


18 kW Power Supply Assembly

3-Phase, 50/60Hz

Input = 380/400/480Vrms

Output = 350VDC

NRTL to UL 1561, 508A