High-Precision Variable DC Power Supply - Professional Lab Equipment

Transform your workspace with the MS-305D Adjustable DC Power Supply, engineered for precision and reliability in professional environments. This versatile bench power supply delivers continuously variable output from 0-30V and 0-5A, making it perfect for electronics testing, battery charging, and laboratory applications.

Professional-Grade Performance:

• Digital LED Display: Real-time voltage and current monitoring with 0.1V/0.1A resolution
• Dual Operation Modes: Automatic constant voltage (CV) and constant current (CC) conversion
• Precision Control: Both coarse and fine adjustment knobs for exact output settings
• Advanced Protection: Built-in overvoltage (OVP), short circuit (OCP), and over-temperature (OTP) safety features

Efficient & Reliable Design:

• High-Efficiency Technology: PWM switch pre-regulator with MOS linear adjustment
• Intelligent Cooling: Temperature-controlled fan reduces noise and extends lifespan
• Durable Construction: Heavy-duty steel chassis with ergonomic carrying handle
• 24/7 Operation: Designed for continuous full-load operation with imported components

Applications & Use Cases

Laboratory & Research: Ideal for product testing, component aging, and scientific research
Battery Charging: Provides optimal constant current followed by constant voltage trickle charge
Electronics Manufacturing: Essential for LED testing, inverter applications, and quality control
Educational Use: Perfect for schools and training centers teaching electronics principles

Technical Specifications

Electrical Specifications:

• Input Voltage: 110V/220V ± 10%, 50Hz/60Hz (switchable)
• Output Voltage: DC 0-30V continuously adjustable
• Output Current: DC 0-5A continuously adjustable
• Display Accuracy: ± 1% ± 1 digit
• Voltage Stability: ≤0.05% + 1mV
• Current Stability: ≤0.1% + 10mA
• Ripple & Noise: CV ≤10mV (RMS), CC ≤20mA (RMS)

Physical Specifications:

• Dimensions: 260mm (L) × 125mm (W) × 155mm (H)
• Cooling: Intelligent temperature-controlled fan
• Operating Temperature: -10°C to 40°C
• Storage Temperature: -20°C to 80°C
• Humidity: <80% relative humidity

What's Included:

• 1× MS-305D Adjustable DC Power Supply
• 1× Set of Test Lead Clip Cables
• User Manual