دانلود رایگان پاورپوینت ترانزیستور (انگلیسی)

Meter check of a transistor
For PNP Transistors
1. Set multimeter to Ohmmeter Ohm Scale.
2. Connect the Negative Probe (Black) to Emitter and the Positive Probe (Red) to the Base(R=R1).

3. Now invert the probe connections to the Emitter for the Red Probe and to the Base for Black. R = “OL”.If this works, your Emitter-Base junction is OK. 

4. Now test the Base-Collector junction. Connect the Red probe to the Base and the Black probe to the Collector (R=R2).

5. Invert the probes again, Black to the Base and the Red probe to the Collector. R = “OL”.If this works, your Base-Collector junction is Ok. 
6. Connect the probes to the Emitter and Collector (probes may be inverted), R = “OL”indicates a working transistor.