DC Power Supply

A Direct Current (DC) power supply is a power supply circuit that converts Alternating Current (AC) or DC input power to DC power.
A DC power supply with AC input is sometimes called an AC-DC converter or AC adapter, while a DC power supply with DC input is called a DC-DC converter.
In the context of test and measurement equipment, the term "DC power supply" often refers to a programmable unit with an AC input and a variable DC output.

There are two primary types of regulated power supplies: linear (or series) and switching.

The diagram below shows a block diagram of a linear regulated power supply. In this design, a series control element (such as a power transistor) maintains a constant output voltage. The difference between the input and output voltage is dissipated as heat by this element, which often requires a heat sink for effective cooling.

Matsusada Precision manufactures and sells high-precision and high-performance DC power supplies from low voltage to high voltage.

Recommended products

R3K-36 series

voltage range

8 to 36 V

current

1 to 3 A

power

24 to 36 W

World's Smallest Programmable DC Power Supply

Fanless design for silent operation

R4K-36 series

voltage range

2 to 40 V

current

0.1 to 4 A

power

0.2 to 36 W

Palmtop-sized DC Power Supply

Silent operation with natural convection cooling

R4K-80 series

voltage range

16 to 320 V

current

0.5 to 10 A

power

80 W

Ultra-Slim, 4-digit, DC Power Supply

Various models for output current control in 0.1 mA increments

RK-80 series

voltage range

16 to 320 V

current

0.5 to 10 A

power

80 W

Ultra-Slim, 3-digit DC Power Supply

Silent operation with natural convection cooling

R4GT series

voltage range

6 to 36 V

current

0.01 to 0.3 A

power

0.1 to 7.2 W

Ultra-High-Resolution Linear DC Power Supply

Features various pulse/ramp functions and ultra-low noise

R4G/R4GN series

voltage range

6 to 650 V

current

0.1 to 10 A

power

12 to 180 W

A Compact, High-Resolution
Linear DC Power Supply

High resolution, ultra-low noise, and digital interface

TB series

voltage range

35 to 1000 V

current

1 to 108 A

power

360 W, 720 W, 1080 W

Wide-Range Programmable
DC Power Supply

Features a "Turbo function" and a compact design, while also suppressing voltage/current overshoot.

RK series

voltage range

6 to 800 V

current

0.6 to 180 A

power

385 to 1200 W

Versatile Benchtop
DC Power Supply

Offers 400 W output in a compact 2.8-inch wide chassis.

RKT series

voltage range

80 to 650 V

current

8 to 100 A

power

1.6 kW

Programmable DC power supplies

Features a variable range output and a "Turbo function".

PVCE series

voltage range

6 to 650 V

current

1.2 to 600 A

power

0.75 to 15 kW

CVCC Programmable DC Power Supply

Ideal for research and development with low noise switching method.

PRKT series

voltage range

80 to 1000 V

current

15 to 170 A

power

5 kW

Wide Range DC Power Supply

High Power Density and Maximum Output 5kW in 1U Size

REK/REKJ series

voltage range

6 to 1500 V

current

1.2 to 1200 A

power

0.77 to 15 kW

Versatile, High-performance
DC power supply

Compact and high power, featuring a PFC circuit and universal input for various operations.

PRT series

voltage range

80 to 1500 V

current

33 to 510 A

power

5 to 15 kW

High Power Autoranging DC Power Supply

Features autoranging output and a variable internal resistance function.

RE series

voltage range

10 to 650 V

current

1.2 to 1200 A

power

0.75 to 15 kW

A Programmable DC Power Supply Available in 147 Models

Low noise, High power, compact and high efficiency

REH series

voltage range

0.75 to 1.2 kV

current

1.1 to 20 A

power

1.1 to 15 kW

High-Power DC Power Supply
(Up to 1.2 kV)

1 kV/15 kW class design with enhanced safety features

REKM series

voltage range

10 to 650 V

current

46 to 6000 A

power

24 to 120 kW

High Power DC Power Supply

A space-saving design with a 19.3-inch width, compatible with standard 19-inch racks

REM series

voltage range

10 to 1000 V

current

30 to 6000 A

power

20 to 120 kW

High Power DC Power Supply

High power up to 120 kW in a single rack, Slim with 19.3-inch width

PRTM series

voltage range

80 to 1500 V

current

60 to 4080 A

power

30 to 120 kW

High Power DC Power Supply

Slim and space-saving design with a 19.3-inch width