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JL294-3数字显示晶体管直流参数测试表能测试多种电子元件,除能测试三极管、可控硅、场效应管外,还能测试多种晶体管参数。它比指针式同类仪表分辨率高,量程大,能发现测试中元件的细微变化。 一、怎样用本仪表识别各种晶体管?以K4档(V_(BR)200.0V,电流<1mA)测试管子正向压降为依据:锗管PN结正向压降为0.1V～0.3V;硅管为0.4V～0.6V;稳压二极管正常值为0.7V;红外发射管正常值为1.0V;红外接收管正常值为9V左右;双向触发二极管双向电压值均30V左右;发光二极管为1.5V～1.8V(应能发光)。
JL294-3 digital display transistor DC parameter test table can test a variety of electronic components, in addition to testing the transistor, thyristor, FET, but also test a variety of transistor parameters. It is higher than the analog pointer instrument resolution, large range, you can find subtle changes in the test components. First, how to use this instrument to identify a variety of transistors? To K4 file (V_ (BR) 200.0V, current <1mA) Test tube forward voltage drop is based on: Germanium PN junction forward voltage drop of 0.1V ~ 0.3V; The silicon tube is 0.4V ~ 0.6V; the normal value of the zener diode is 0.7V; the normal value of the infrared emitter tube is 1.0V; the normal value of the infrared receiver tube is about 9V; the bidirectional voltage of the bidirectional trigger diode is about 30V; the LED is 1.5 V ~ 1.8V (should be able to glow).