Electromagnetic oven triode s8550 and s8050 how to detect good or bad?
8050 and 8550 is the most common high-frequency matching triode, not electromagnetic oven dedicated, many devices are available, pin row EBC, 8050 is NPN, 8550 is PNP, if not yet, then you have to study
If the transistor connected with the red pen a pin, and the other two with the black pen measuring pin conduction and voltage display, then the triode NPN type transistor, the red pen pin connected to the base electrode of the triode B.The test of the multimeter probe connected to the voltage of a black feet slightly higher, then the feet to the emitter of the transistor E, the remaining one foot is low voltage transistor collector C. ?If the triode black probe connected to one pin, and the other two with the red pen measuring pin conduction and voltage display, then the triode PNP type transistor, and the black pen connected to the base electrode of the triode B feet.The method of testing the multimeter red pen connected with the voltage of a foot is slightly higher, so the feet to the emitter of the transistor E, the remaining one foot is low voltage collector C. ?Through the above test, you can determine the type of triode, and can be determined that the transistor is good. If no matter how to convert pen, multimeter indication is 1, or nearly 0 readings, indicating that only the triode has been open or breakdown.
Using a multimeter, you can roughly determine the quality of the triode.The transistor S8550 is a PNP type triode, and the S8050 is a NPN type triode.The digital multimeter dial to the diode file with the red pen, any contact table triode tube with a pin, and then the black pen to test the remaining two pins, and in turn, arbitrary with the black pen contact table triode tube with a pin, and then to the rest of the red pen test two pins, until the test results are as follows
