KUAIQU SPPS-D303XR 30V 3A 90W Precision Linear DC Regulated Power Supply for PCB Testing

KUAIQU SPPS-D303XR 30V 3A 90W Precision Linear DC Regulated Power Supply Product Overview The KUAIQU SPPS-D303XR 30V 3A 90W Precision Linear DC Regulated Power Supply is designed for PCB testing, electronics R&D, sensor testing, and low-power circuit development. With a 0–30V adjustable output, up to 3A current, and 90W output power, it provides stable and precise DC power for electronic circuits and modules. Built around a full-power copper toroidal transformer, the SPPS-D303XR delivers an ultra-low ripple linear power supply output that is well suited to sensitive electronic testing. The 10mV voltage and 1mA current adjustment resolution allows fine output adjustment, while the 2.8-inch full-color LCD displays voltage, current, and voltage/current waveform curves during testing. The SPPS-D303XR also combines programmable ramp-up, cycle testing, 99 groups of data storage, and RS232/RS485/USB communication, making it more than a conventional bench supply for repeatable laboratory testing. Key Features 0–30V / 0–3A Adjustable Linear Output: Provides up to 90W for PCB testing, sensors, development boards, electronic components, and other low-power circuits. Precision 10mV / 1mA Adjustment: Fine voltage and current adjustment provides detailed control for electronics testing and circuit development. Full-Power Copper Toroidal Transformer: The transformer-based design provides stable output and supports the low-ripple linear DC power supply characteristics required for sensitive electronic circuits. Ultra-Low Ripple Output: Designed to provide clean and stable DC power for applications where low output ripple is important. 2.8-Inch Full-Color LCD: Clearly displays output voltage and current while providing a visual interface for monitoring test parameters. Voltage & Current Waveform Display: Real-time voltage and current curves help users observe output changes during circuit testing. Programmable Ramp & Cycle Testing: Supports controlled voltage/current ramp-up and programmable repeated cycles for repeatable test procedures. 99 Groups of Data Storage: Stores and recalls up to 99 sets of voltage and current parameters for frequently repeated tests. OCP & OVP Protection: Over-current and over-voltage protection helps protect the power supply and connected equipment. USB 5V/2A Output: Provides auxiliary USB power with real-time USB voltage and current display. RS232 / RS485 / USB Communication: Enables computer communication and integration with automated test systems. Screen Lock & Buzzer: Prevents accidental parameter changes and provides audible operating or protection alerts. Applications PCB Testing & Repair: Suitable for powering, troubleshooting, and repairing low-power circuit boards. Electronics R&D: Suitable for prototype development, circuit debugging, and laboratory electronics research. Sensor Testing: Suitable for sensors, measurement modules, and low-power electronic devices. Development Board Testing: Suitable for MCU boards, embedded systems, and control boards. Electronic Component Testing: Suitable for testing components and small electronic modules under controlled DC conditions. Quality Check and Terms of Service Has passed CE & FCC Certification. All DC power supplies and accessories are inspected before shipment to ensure good quality. Customer support: Contact us with any questions, and we'll respond within 24 hours. Package includes: DC Power Supply *1 Output Power Cord *1 Input Power Cord *1 User Manual *1 Warranty Card *1 Specifications Parameter SPPS-D303XR Output Voltage 0 ~ 30V Output Current 0 ~ 3A Rated Power 90W USB Output 5V / 2A Load Regulation (Voltage) ≤0.01%+10 mV Load Regulation (Current) ≤0.01%+10 mA Line Regulation (Voltage) ≤0.01%+3 mV Line Regulation (Current) ≤0.01%+3 mA Setting Resolution (V/A) 1mV / 1mA Readback Resolution (V/A) 1mV / 1mA Setting Accuracy (Voltage) ≤0.03%+10mV Setting Accuracy (Current) ≤0.1%+10mA Readback Accuracy (Voltage) ≤0.03%+10mV Readback Accuracy (Current) ≤0.1%+10mA Ripple & Noise (Voltage) ≤15mV(p-p) / ≤5mV(rms) Ripple & Noise (Current) ≤10mA(rms) Rise Time (No Load / Full Load) ≤200ms Fall Time (No Load) ≤500ms Fall Time (Full Load) ≤50ms Full Load Efficiency ≥48%