How does a digital multimeter test the polarity of a transistor?

The digital multimeter test differs from the pointer multimeter, so how can we test the polarity of the transistor with the digital multimeter?

First, hit the multimeter to the test diode, and use the red table pen of the multimeter to access one of the pins of the transistor, and use the other table pen of the multimeter to test the remaining pins until the following results are obtained:

1. If the black table pen of the transistor is connected to one of the pins, and the other two pins are tested with the red table pen for voltage display, the transistor is a PNP transistor, and the black table pen is connected to the Base B of the transistor. When the above method is used to test, the red table pen of the multimeter is connected to one of the feet with a slightly higher voltage, then this foot is the launch pole e of the transistor, the pin with the remaining low voltage is the collector C.

2. If the red table pen of the transistor is connected to one of the pins, and the other two pins are tested with the black table pen for voltage display, the transistor is an transistor, and the red table pen is connected to the Base B of the transistor. When the above method is used for testing, the black table pen of the multimeter is connected to one of the feet with a slightly higher voltage, then this foot is the launch pole e of the transistor, the pin with the remaining low voltage is the collector C.

This is my practical experience in lab board. Because the method for online queries is complicated, many of them are reproduced as the testing method of minghao, however, my multimeter does not have a special Transistor test outlet, so I only need to use this method myself!

 

 

How to make a digital multimeter to measure the difference between the quality of the transistor and the polarity of silicon and Ge? Best Answer You can use a multimeter to measure the performance of a transistor.

The diode file can be used to measure its B Base (there are a lot of stickers, I have answered, you can find it)

When measured with a diode, the conduction pressure drop is about V, and about V is about v.