0-3A USB Doctor 15W USB Adjustable Constant Current Electronic Load DC3.5-21V

0-3A USB Doctor 15W USB Adjustable Constant Current Electronic Load DC3.5-21V

Desceiption:
- Input and output interface: positive and negative in the USB input port + clip wire interface + with fast charge trap device socket / freewheeling parallel interface uses
- Working voltage: DC3.5-21V (compatible with Qualcomm QC2.0 A/B protocol 5V/9V/12V/20V protocol) support Qualcomm B charging accelerator here to buy
- Constant discharge current: 0-3A continuously adjustable (coarse adjusting knob to adjust the range of 0-3A, adjust the +/-0.2A fine tuning knob to achieve fine tuning, constant current)
- Current work error: no more than 2%+3mA
- Continuous rated discharge power: 15W / short time limit can be 25W (if in high voltage 20V, continuous discharge current as less than 1a, in order to avoid too much power field effect tube overload caused by)
- Intelligent temperature control temperature: 55 degrees (higher than the threshold temperature of the fan automatically open, lower than this temperature fan automatically shut down)
- Intelligent temperature detector type: NTC type high sensitivity thermistor
- Fan voltage stabilizing chip DC-DC switching frequency: 1.2MHZ
- Double input interface: USB input / 3.5 screw press type input wiring column spacing
- Power indicator: blue chip LED
- Fan speed: 40 10 large size fan, speed 2900/ points
- Control chip: torch for constant current chip
- Adjusting potentiometer: metal material long life potentiometer
- Material: alloy knob CNC computer gongs bright metal button
- Discharge power tube type: Holland Royal PHILPS brand, voltage controlled low resistance temperature type field effect MOS tube (suitable for high voltage and high temperature constant current more stable)