Description 1Automatic detection of NPN and PNP transistors, field effect transistors, diodes, double diodes, SCR, automatic recognition of transistor pinchout, SCR can just identify their pinchout, and the trigger current of the SCR that needs to be tested is less than the current that the tester can provide, and the tester can just provide the maximum trigger current of 6mA. 2Test NPN and PNP transistor common emitter current amplification factor, base electrodeemitter electrode threshold voltage, collectoremitter electrode leakage current. 3Identify Darlington transistor by transistor base electrodeemitter electrode threshold voltage and high current gain. Separate capacitance function test, the test mode of continuous measurement of 2uF50mF capacitors can be directly measured in its circuit (measuring power required by capacitance in the circuit, after measuring capacitance totally discharged). 4The display unit adopts 160x128 color display, fullscreen characters 8x20, 16bit color depth, and graphic elements display symbols, rotation switch control, onebutton measurement, automatic shutdown. 5Use 9V laminated battery, you can also use power adapter (DC 6.812V), the total current is about 30mA, and then about 20nA shutdown current. 6DC voltage measurement up to 50V, output signal throughout the whole process, with multiple ranges of frequencies to choose from, the maximum output frequency is 2MHz, output a fixed frequency, variable duty cycle pulse signal (PWM), the duty cycle is adjustable from 1% to 99%.