1. Diodes
1.1, what is a diode
Only allows current to flow in one direction, and is composed of two electrodes, P-type semiconductor and N-type semiconductor, called a diode
1.2. Diode Example Diagram
As shown in the figure above, the current from the anode to the cathode, that is, the direction of the arrow, means that it can pass. The current from the cathode to the anode is blocked by a separator, that is, it cannot pass through it. We can draw the characteristics of a diode: unidirectional conductivity.
2. Explore the characteristics of diodes
2.1. Explore the unidirectional conductivity of diodes
The one-way conductivity conclusion of the diode is correct.
2.2. Explore the role of resistance when the diode is turned on
2.2.1, no diode
2.2.2, add diode
The current becomes smaller, indicating that when the diode is turned on, there is resistance in the diode, which has a blocking effect.
3. Diode volt-ampere characteristics
