Project Description

MD3020-2D multiplex output is high-precision Linear DC Power Source composed of two way regulated output power supply and one-way fixed output power supply. It uses four groups of three LED to display output voltage and current values of the two way power supply respectively. In addition, two-way regulated output power supply possesses automatic transfer function to regulate voltage and current. And its circuit is composed of compensating pipe power exhaustion steering circuit, operational amplifier and reference voltage regulator with temperature compensation. Therefore, the circuit is stable and reliable. The output power voltage of the power supply may randomly be regulated from 0 to nominal voltage value. When it is in the state of current regulation, the current regulation output current can continuously be regulated from 0 to nominal current value.


Input voltage: Single phase 220/110V±10% 50/60Hz±2Hz (setting switch at the back)

Series voltage/current: 0-60V/0-3A

Parallel voltage/current: 0-30V/0-40A


Constant voltage state

Output voltage: 2*0-30V

Voltage display accuracy: ±1%+2 figures

Voltage effect: ≤ 0.01%+0.5mV

Load effect: ≤ 0.01%+2mV (output current ≤ 3A)

≤ 0.01%+5mV (output current > 3A)

Ripples and noises: ≤ 0.5mV r.m.s. (output current ≤ 3A)

≤ 1.0mV r.m.s. (output current > 3A)

Temperature coefficient: ≤ 300PPM/℃


Constant current state

Output current: 2*0-0A

Current display accuracy: ±2%+2 figures

Current effect: ≤ 0.2%+6mA

Load effect: ≤ 0.2%+6mA

Ripples and noises: ≤ 3.0mA r.m.s.


Operating temperature: -10℃ to 40℃

Relative humidity: ≤ 80%

Storage temperature: -10℃ to 70℃

Relative humidity: ≤ 70%

Protection: SCP, OCP

Dimensions: 570*260*165mm

Weight: 21.5kg


Model No. Spec. Description
MD3002-2D 2*30V 2A + 5V 3A 60W multiple output adjustable Linear DC Power Supply for industry
MD3003-2D 2*30V 3A + 5V 3A 90W dual output digital Linear DC Power Source for business
MD3005-2D 2*30V 5A + 5V 3A 150W multiple output variable Linear DC Power Supply for lab
MD6402-2D 2*64V 2A 128W dual output regulated Linear DC Power Source for laboratory
MD6403-2D 2*64V 3A 192W multiple output desktop Linear DC Power Supply for industry
MD6405-2D 2*64V 5A 320W dual output benchtop Linear DC Power Source for education
MD3010-2D 2*30V 10A 300W multiple output portable Linear DC Power Supply for manufacturing
MD3020-2D 2*30V 20A

600W dual output adjustable Linear DC Power Source for product aging