How the digital multimeter tests the polarity of the transistor

Digital multimeter test and the pointer multimeter is different, then how to test the polarity of the transistor with a digital multimeter.

First, the multimeter to the test diode end, with the multimeter of the Red pen to one of the transistor's pin, and the other side of the multimeter to test the remaining pins, until the following results are tested:

1, if the transistor's black form pen to connect one of the pins, and the Red Watch pen to test the other two pins are on the voltage display, then this transistor is PNP transistor, and the black pen is connected to the foot of the transistor base B, the above method when the red pen of the multimeter is connected to one of the foot voltage is slightly higher, Then the PIN is the emitter e of the transistor, and the remaining low voltage pin is the collector C.

2, if the transistor red pen connected to one of the pins, and the black form to measure the other two pins are on the voltage display, then this transistor is NPN transistor, and the red Pen is connected to the foot of the base of the transistor B, the above method test when the black table of the multimeter one of the foot voltage is slightly higher, Then the PIN is the emitter e of the transistor, and the remaining low voltage pin is the collector C.

This is my actual experience in the experiment board, because the online query method is more complex, which more of the reprint for the Minghao test method, but I do not have a dedicated multimeter transistor test socket, so only own use of this method.

How to make digital multimeter to test transistor good or bad polarity of the difference between silicon germanium? The best answer with a multimeter transistor file, you can measure the transistor's good or bad

The B-base can be measured with a diode file (there are a lot of posts, I've answered, you can find them)

With the diode file measurement, its on-off pressure drop, about 0.3V for germanium tube, about 0.6V for the silicon tube