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    Picture of 30V 100A Linear Adjustable DC Power Supply, 3000W
    Picture of 30V 100A Linear Adjustable DC Power Supply, 3000W
    Picture of 30V 100A Linear Adjustable DC Power Supply, 3000W

    30V 100A Linear Adjustable DC Power Supply, 3000W

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    SKU: PH-DCPS-30100
    $3,269.89
    ● 0 to 30V DC at up to 100A, continuously adjustable, with 3000W high-power output. ● Supports 110V/220V±10% AC input and 50/60Hz dual frequency, which can be stably adapted to global scenarios. ● Equipped with overcurrent and overvoltage double protection, ensuring safe use. ● Features a high-precision digital display and universal wheels, with a user-friendly design.
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    Overview

    Factory-direct pricing on our high-performance 0–100A, 0–30V linear DC power supply—now with switching-mode topology for a robust 3000W DC output. Designed for precision and reliability, this unit delivers fully adjustable voltage and current, accepts 110V/220V±10% AC input, and features industry-leading constant voltage (CV) / constant current (CC) output precision and exceptional efficiency. Built to perform, it operates continuously at full load for over 16 hours, making it the ideal choice for demanding industrial and laboratory applications where consistent, stable power is non-negotiable.

    Linear Adjustable DC Power Supply Features

    Feature

    • High Power Adjustable: Voltage 0-30V, current 0-100A continuously adjustable, peak power 3000W, meeting high current testing requirements.
    • Stable Output: Load regulation rate (CV) as low as 1×10-3+8mV, ripple noise ≤0.5mV, output accuracy and purity far exceed industry standards.
    • Strong Endurance: Can work continuously at full load for more than 16 hours, with guaranteed industrial-grade durability.
     

    Details

    1. Heat Dissipation and Mobility: The body is equipped with large-area louvered heat dissipation holes for efficient heat dissipation; universal casters are installed at the bottom to facilitate the movement of the equipment.
    2. High-precision Digital Display: The three-digit digital display can clearly show voltage and current values at the same time, with a resolution of 100mV/100mA.
    3. Convenient Adjustment and Mode Switching: Dual knobs independently adjust voltage and current, with intuitive operation, suitable for various testing scenarios.
    30V 100A Linear Adjustable DC Power Supply Details
    Specs
    Model PH-JK30100S
    Input Voltage 110V or 220V AC (+/- 10%)
    Output Voltage Range 0-30V
    Output Current Range 0-100A
    Output Power 3000W
    Frequency 50Hz/60Hz
    Output Type Dual
    Display 3 digit
    Display Accuracy ≤ ±0.1%＋2d
    Voltage Display Resolution 100mV
    Current Display Resolution 100mA
    Efficiency >60%
    Voltage Regulation
    Load Regulation (CV) 1×10-3+8mV
    Line Regulation (CV) 1×10-3+3mV
    Ripple & Noise (P-P) 0.5mV
    Temperature Coefficient 300PPｍ/℃
    Current Regulation
    Load Regulation (CC) ≤5mA
    Line Regulation (CC) 2×10-3+3mV
    Temperature Coefficient 500PPｍ/℃
    Others
    Protection Over Load and Over Voltage Protection
    Recovery Time ≤100µs
    Operating Ambient 0℃ to + 40℃/ 85%RH
    Storage Ambient -10℃ to + 80℃/ 80%RH
    Warranty 12 Months
    Size 480 (W) x 520 (H) x 700 (D) mm
    Weight 110kg
    Package List 1 x DC Power Supply Host, 1 x User Manual
    Application
    Bioelectric Signal Acquisition Device

    Bioelectric Signal Acquisition Device

    Communication Module

    Communication Module

    Automotive Electronics Testing

    Automotive Electronics Testing

    Experimental Electronic Instruments

    Experimental Electronic Instruments

    FAQ

    Q1: What are the characteristics of the main circuit of a linear DC power supply?

    The main circuit of a linear DC power supply consists of a high-power transistor connected in series (or multiple transistors in parallel) at the output end of a thyristor power supply. The control circuit only needs to provide a small current to the base of the transistor to precisely control the large current it outputs, enabling the power supply system to further stabilize the voltage on the basis of the thyristor power supply. Its voltage regulation performance is 1–3 orders of magnitude higher than that of switching power supplies or thyristor power supplies.

    Q2: Where does the main power loss of a linear DC power supply come from?

    Main power loss in a linear DC power supply comes from the power transistor (also known as the regulator) connected in series at the output. This transistor typically has a voltage drop of around 10V, and for every 1A of output current, it consumes 10W of power inside the supply. For example, a 500V 5A power supply has an internal loss of 50W, which accounts for 2% of its total output power.

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