Product features

  • Adjustable outputs: 0-30V and 0-5A Variable controls for both current and voltage outputs
  • Automatic cooling fan, overload and short circuit protection
  • Can be operated as constant current or constant voltage source
  • Full one year warranty All metal construction, compact design
  • Alligator to Banana and AC Power Cable Included

Product Description



DC Power Supply

1. Input voltage: 220 V/110V,

2. Constant Voltage and Current, Continuously Adjusted

3. Specialized designed for laboratory, school and production lin


Side Cooling Design

The side vents correspond to the rear fans to convect the air, so there is no effect of the use and lifetime of this power supply due to excessive temperature during working.


Exhaust Fan Protection

Exhaust fan has low noise, does not interfere with work, and safer with fuses. 110V and 220V can be converted by hand.


Conversion of 110V/220V

Precise adjustment, supporting 110V/220V by a button and over-current protection so that the unit won't be damaged.


Upgrade Elastic Handle, Easy to Carry


Without Turning off the Power, ''STOP/OUT'' Button Supports Interruption of The Output


Auto Conversion of ''A'' and ''mA'' though The Movement of Decimal Point

Dr.meter PS-305DM

power supply is a kind of continuously adjustable linear DC voltage regulator power supply with high stability, high reliability and low noise. Its output voltage and current can be continuously adjusted. Also it can be both as constant voltage and constant current dc power supply. Its constant voltage and current can be auto-conversion. This low cost and universal power supply can be used in many different areas, from production lines to school use.


1. Single output, single phase

2. 110V/220 +10% input voltage, dual-input voltage.

3. Output constant current adjustable

4. Output constant voltage adjustable

5. 3LED voltage and current display

6. mA and A converted display which controlled by a button.

7. Constant voltage and current operation model. C.V and C.C convert automatically

8. Current limitation protection

9. Good quality, cost-effective


Suitable for the laboratory, electronic, communication equipments maintenance, products line, scientific research and teaching units


Input voltage: 220 V/110V¡À10% 50/60Hz (setting switch at the back)

Output voltage: 0-30V

Output current: 0-5A

Relative humidity: <80%

Relative humidity: <70%

Constant voltage state:

Voltage stability: <0.01%+3mV

Load stability :< 0.01%+5mV

Ripple & noise : <1.0mVrms

Temperature coefficient: < 300PPM/0C

Constant current state:

Current stability: < 0.2%+3mA

Load stability :< 0.2%+3mA

Ripple & noise :< 3mArms