The main reason is that the semiconductor types of each pole are different. The E, B, and C poles of PNP transistors are P-type, N-type, and P-type semiconductors, respectively, while NPN transistors are exactly the opposite.
Active and passive components
Determine gate G: Set the multimeter to the R × 1k position, connect any negative electrode of the multimeter to one electrode, and sequentially touch the other two electrodes with the other probe to measure their resistance.
Can fast recovery diodes and Schottky diodes be replaced? We are currently experiencing a shortage of goods, and many people are looking for solutions to replace materials, but fast recovery diodes and Schottky diodes cannot be replaced!
What principles should be paid attention to when selecting TVS diodes? This depends on the specific protection work of the TVS diode circuit diagram.
When there is a problem with the fast recovery diode circuit, we usually measure it through a multimeter. Do you know the reason for the damage to the fast recovery diode?
