The principle of diode protection circuit
Release time:
2022-01-07
The principle of the diode protection circuit The most common function of a diode is to allow current to pass in one direction only (known as forward bias) while preventing current from passing in the reverse direction (known as reverse bias). When a DC bias voltage occurs, the mutual suppression of the external electric field and the self-built electric field increases the diffusion current of charge carriers, causing forward current (i.e., the reason for conduction). When reverse bias is generated, the external electric field and the self-built electric field are further strengthened, forming a reverse saturation current I0 that is independent of the reverse bias within a certain range of reverse voltage (i.e., the reason for not conducting). When there is a reverse bias externally, the external electric field and the self-built electric field are further strengthened, in
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