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30V 5A Micro Adjustable DC Power Supply Variable Benchtop Regulated Power Source

1.Ultra-compact mini size, space-saving, easy for desktop use and field portable debuggin
2.4-digit digital tube simultaneously displays voltage, current and power value
3.Independent ON/OFF output switch, no need to reboot the whole unit
4.Power-off memory function: restore preset voltage & current when power on again
5.Built-in USB quick-charge port for extra digital device charging
6.Key-lock function to avoid accidental parameter change, improve testing stability
7.Auto switch between constant-voltage & constant-current mode
8.Widely used for phone repair, circuit debugging, MCU test, DIY projects and laboratory teaching
  • HBVC-305MS

  • Weforsemi/Haiben

  • DC Power Supply

type:
Rated Voltage Output:
Rated Current Output:
Rated Power Output:
AC Input Voltage:
Product Size:
Fuse Specifications:
Availability:
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30V 5A Micro Adjustable DC Power Supply Variable Benchtop Regulated Power Source

Semiconductor Supply Chain & Solution Partner


Overview
The ultra-mini DC regulated power supply is a tiny single-channel DC power supply with a four-digit digital tube that simultaneously displays voltage, current and power values. It is equipped with an "ON/OFF" output switch and a USB fast-charging output. Lightweight and compact, it is the ideal preferred test tool for customers.


Features
Small in size, fully functional


Independent ON/OFF output switch
It can remember the preset voltage and current values before turning off
External USB Type-A fast charging
Key lock function to prevent misoperation

Applications

  • Teaching & Laboratory (Classroom demonstrations, student experiments, tech innovation projects)

  • Desktop R&D (Embedded systems development, module testing, prototyping & debugging)

  • Mobile Repair (On-site repair for cell phones, laptops, home appliances, etc.)

  • Field Debugging (On-site equipment maintenance, exhibition demonstrations, outdoor testing)




Specification


Model 305MS
Rated Voltage Output 0~30V
Rated Current Output 0~5A
Rated Power Output 0~ 150W
AC Input Voltage 115-230V±10% (wide voltage)
Nominal Working Conditions
Working Conditions Temperature: 0ºC to 40ºC
Relative humidity: < 80%RH
Storage Conditions Temperature: -10ºC to 70ºC
Relative humidity: < 70%RH
Constant Voltage State
Voltage Stability ≤1%±3mV
Load Stability ≤1%±3mV
Ripple Noise ≤50mVrms
Constant Current State
Current Stability ≤1%±3mA
Load Stability ≤1%±3mA
Ripple Noise ≤50mArms
Display
Voltage Resolution 0.01 V
Current Resolution 0.001 A
Display Accuracy 1%±5 digits
USB-A Output Port QC3.0 (18Wmax)(5V-3A/9V-2A/12V-1.5A)
Fast Charging Protocol Support QC3.0/2.0/FCP(SCP A)
Product Size (W×D×H)mm 305MS:(102×195×80)mm
Product Net Weight About 0.8kg
Packaging Size (W×D×H)mm 305MS:(178×228×115)mm
Weight With Package About 1. 15 kg
Fuse Specifications 3. 15 A




Micro DC Power supply 305MS 10


1 .Voltage display window: Shows preset voltage values in standby mode; In the output state, display the output voltage value. Unit:
volts (V).
2 .Current display window: Displays preset current values in
standby mode; Display the output current value in the output state. Unit: Amperes (A).
3 .Power display window: In standby mode, shows "OFF"; In the output state, show the power output of the power supply. Unit: Watt (W).
4 .18W fast charging output port: QC18W (5V-3A/9V-2A/12V-1.5A).
5 .Output on/off button : Short press to switch output status.
6 .Positive(Red) output terminal.
7 .Negative(Black) output terminal.
8 .Keypad Lock indicator : Hold down the current knob lock
indicator light. The lock indicator light is yellow, indicating that the knob is locked; Hold down the current adjustment knob again and the lock indicator light will turn off and the lock will be released.
9 .Current adjustment knob: Rotate clockwise and the preset
current value increases. Turn it counterclockwise and the current preset will decrease. Press the knob short to move the current
preset editing position from right to left; Hold down the knob to lock/unlock the knob.
10 .CC Constant current indicator : The red "CC" light on, indicating that the power supply is currently in constant current output mode.
11 .Voltage adjustment knob: Turn clockwise to increase the preset voltage value; Turn it counter clockwise and the preset voltage will  decrease. Press the knob short to move the voltage preset editing
position from right to left; Long press the knob to save the current output state, and the next time the power is connected, restore the previous output state directly.
12 .CV Constant voltage indicator: The green "CV" light on,
indicating that the power supply is in constant voltage output mode at this time.


Micro DC Power supply 305MS 11

1 .Power input on-off switch: Press "1" to turn on power, press "0"to turn off power input.
2 .Power supply socket: 115-230V±10% (wide voltage).
3 .Fuse holder: Built-in 3.15A/5A fuse.
4 .Cooling fan









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