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

Quiet operation with a fanless PSU

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

Excellent quietness due to its natural air-cooling system

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

Excellent quietness due to its natural air-cooling system

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

Compact and 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," a compact design, and suppresses 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

147 models, programmable DC Power Supply

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

Max 1.2 kV high voltage and high power
DC Power Supply

Safety design, Outstanding small size in its class of 1kV/15kW

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