1. Measurement of collector working scan voltage for transistor characteristic curve, NPN transistor 0 to+24V, PNP transistor 0 to -24V. 2.The working voltage of the transistor and the resistance volt ampere characteristic curve is the collector scan voltage from 0 to+24V. 3. The maximum base current of the class wave is 500MA, with a range of 11 magnifications. 500MA/gear (5R), 250MA/gear (10R),125MA/gear (20R), 49MA/gear (51R), 25MA/gear (100R), 12.5MA/gear (200R), 4.9MA/gear,(510R), 2.5MA/gear (1K), 1.25MA/gear (2K), 490UA/gear (5.1K), 200UA/gear (10K). The maximum current of the collector is 5A, and the range is divided into 11 magnifications. The collector sampling resistor voltage is 5V, The sampling resistors are 2R, 4R, 6R, 9.9R, 19.9R, 39.9R, 78.9R, 146.9R, 266.9R, and 486.9R Full range current: 5A, 2.5A, 1.25A, 0.833A, 505MA, 251MA, 125MA, 63MA, 34MA, 18.7MA, 10MA The output characteristic curve scanning line consists of 8 levels, with a single scanning time of 200MS and a total scanning time of 2400MS. The display screen is a 4-inch TFT IPS high-definition screen with a resolution of 320 x 480. Voltage: AC220V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Color: As Shown Material: Aluminum Alloy Package Contents: 1 x Characteristic Curve Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.