ITEM NAME:USB resistor dc electronic load tester With switch 5V 1A 2A 3A battery capaci Ew USB load resistor electronic adjustable voltage 3 current industrial High power discharge resistance battery capacity tester 5V 1A/2A/3A with switch 1A / 3A switchable, 2A / 3A switchable, Warm reminder: 1. The switch is only used to change two gears, not adjustable! For example, 1a3a, can only switch 1a and 3a, can not measure 2A! 2. The resistance of the load is only designed for 5V, not used to test other voltage such as 9V, 12V equipment! The load application Can be convenient to test mobile power 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 mobile power 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. The actual current size, please according to ohm's law: I = U/R Resistor in parallel calculation formula: R=1/(1/R1+1/R2+...+1/Rn) K1=4.7Ohm/10W , K2=2.2Ohm/10W Package included: 1Pc USB load resistor electronic adjustable voltage 3 current industrial High power discharge resistance battery capacity tester 5V 1A/2A/3A with switch 1A / 3A switchable, 2A / 3A switchable, Warm reminder: 1. The switch is only used to change two gears, not adjustable! For example, 1a3a, can only switch 1a and 3a, can not measure 2A! 2. The resistance of the load is only designed for 5V, not used to test other voltage such as 9V, 12V equipment! The load application Can be convenient to test mobile power 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 mobile power 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. The actual current size, please according to ohm's law: I = U/R Resistor in pa.The switch is only used to change two gears, not adjustable! 2A / 3A switchable. 1A / 3A switchable. Resistor in parallel calculation formula: R=1/(1/R1+1/R2+.+1/Rn).
