USB Resistor Dc Electronic Load With Switch Adjustable Current 5V 1A/2A/3A

one switch load Description: A designed according to the principle of's law and through the resistor in parallel through a different switch, can produce 3 kinds of resistance of a new USB electronic load resistance discharge, when all the switch opens, is 2.2/10W, 4.7/10W, 2 kinds of resistance in parallel at the same time, in 5V voltage almost can produce 3A discharge current. The actual current size, please according to's law: I = U/RResistor in parallel calculation formula: R=1/(1/R1+1/R2+...+1/Rn)K1=4.7Ohm/10W , K2=2.2Ohm/10WLoad device is working, winding resistance caused by large current, will produce very, very high temperature, therefore in the proce of use, and just use the finished in a short period of time, absolutely can't human exposure golden metal radiator parts, to avoid the scald!Nor to flammable itcontact tester, in order to avoid the fire!In use proce must be highly vigilant!Considering the particularity of heat resistance, the initial use of electricity after a period of time will appear a few smoke and smell, because outside the paint contains very little moisture, high temperature electric heating, moisture eates form the phenomenon of smoke, produce peculiar smell by high temperature baking paint outside phenomenon, completely disappear after using for a period of time.This phenomenon is inevitable, belongs to the normal situation, do not have to worry about load tester can damage, please be aured that use Load application:Can be convenient to test charging treasure, mobile phone charger, USB power output current is such as to amount to mark, so long as connect USB above.And can do it for supply and USB power adapter aging test, aging test discharge resistance will be hot, temperature is controlled in 80 ~ 85, please pay attention to prevent hot Specification: Size: 6.5x2.2cm/2.56x0.87inchQuantity: 1 PcNote:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bidDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents:1 x USB Testertwo switches load Description: and high quality.It's normal when welding resistance may occur heated smoke or odor phenomenon.New products can freely be switched with a switch, very convenient and easy to use.USB load resistance, is mainly to do discharge test, if the charger or supply output current is 2A, load meter power is 5V * 2A = 10W, if the output current is 1A, then the power load is 5V * 1A = 5W.Switch and usb interface design.Specification: Color: Green.Rated Power: 5W-10W.Technology: Ceramic Composition.Resistance: 1A-2A.Type: Fixed Resistor.Size: 7.3cm x 1.8cm x 1.0cm. More about itemusbload resistorpower resistoragingresistance measuringcurrent dischargeresistorDischargeresistorswill become hot, the temperature at80 ~ 85 °,pleasenote thatanti-scald.You caneasilytest mobilepower chargingtreasure, cell phone charger, USBpower supplyoutputcurrent itandard,as long as theUSBport tothe resistanceabovethe line.Andcanmove thepower and USBpower adapterto dothe aging test. Package included:1pcs x USB Load ResistancePower Resistors Aging Resistors module 2A 1A

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