Introduction of QW-MS1520D Products<br>Product characteristics:<br>1. Thickened steel plate chassis, beautiful and generous, strong and durable. Hand-held design, easy to carry.<br>2. Voltage and current are designed by coarse and fine tuning to accurately adjust the output voltage.<br>3. Constant voltage, constant current automatic conversion, can be used as a constant voltage source, also can be used as a constant current source.<br>4. Perfect protection functions: overvoltage protection (OVP), short circuit protection (OCP), overtemperature protection (OTP).<br>5. Reasonable circuit design, imported key components, can be used 24 hours full load.<br>6. PWM switch pre-regulator, MOS linear adjustment mode, high efficiency, energy saving and environmental protection, performance close to linear power supply, efficiency is far higher than linear power supply, linear power supply updating products.<br>7. Intelligent temperature control fan, adjust the speed according to the load, effectively reduce noise, prolong the life of the fan.<br>Scope of application:<br>1. Testing ageing of factory products: such as DC motor, DC fan, DVD, audio, resistor, capacitor and other products.<br>2. Battery charging industry: Perfect application in battery charging industry, first provide constant current charging, then change to constant voltage trickle current charging, prevent overcharge, protect battery, effectively prolong battery life.<br>3. Inverter industry: overcome the jamming problem of linear power supply relay conversion, extremely fast response speed, to meet the instantaneous change of load requirements.<br>4. LED manufacturing industry: LED testing, aging.<br>5. Other occasions requiring DC regulated power supply.<br>Technical parameters:<br>1. Input voltage: 220V 50Hz (default)<br>110V 60Hz (customizable)<br>115V/230V (customizable, manual switching)<br>2. Output Voltage: DC 0-15V Continuously Adjustable<br>3. Output current: DC 0-20A continuously adjustable<br>4. Display resolution: voltage 0.1V, current 0.1A. (Higher display accuracy can be customized)<br>5. Display accuracy: +1%+1 word<br>6. Voltage stability: <0.05%+1mV<br>7. Current stability: <0.1%+10mA<br>8. Load stability: CV < 0.1%+1mV CC < 0.1%+10mA<br>9. Ripple and noise: CV < 10 mV (RMS) CC < 20 mA (RMS)<br>10. Cooling mode: Intelligent temperature control fan forced air cooling. Fans above 40 start and fans below 35 stop.<br>11. Working environment: - 10-40 C relative humidity < 80%<br>12. Storage environment: - 20-80 C relative humidity < 80%<br>13. Appearance size: 260 * wide 125 * long 155mm (excluding protruding parts)<br>
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