What is a voltage regulator diode, and what is the difference between a voltage regulator diode and a regular rectifier diode? 5

3. Voltage drift fault

Voltage drift fault of voltage regulator diode refers to the phenomenon that the output voltage of voltage regulator diode changes with time. When such a fault occurs, the voltage regulator diode cannot stably output a certain DC voltage normally.

Solution: Check if the voltage regulator diode has been subjected to excessive temperature or voltage shock, causing internal damage. If the voltage regulator diode is damaged, it needs to be replaced with a new one.

4. Overheating fault

Zener diode overheating fault refers to the phenomenon where the temperature of the Zener diode is too high during operation, resulting in a decrease or damage to its performance.

Solution: Check the heat dissipation of the voltage regulator diode. If the voltage regulator diode is subjected to excessive load current or high ambient temperature, it is necessary to strengthen the heat dissipation measures. If the voltage regulator diode has been affected by excessive temperature, a new voltage regulator diode needs to be replaced.

5、 The difference between voltage regulator diode and ordinary rectifier diode

1. Definition

Zener diode is a special type of diode that has the characteristic of stabilizing the output voltage. Its working principle is to stabilize the input voltage and output it as a certain DC voltage through the internal circuit of the chip. Zener diodes are commonly used in power circuits to ensure stable operation of the circuit.

A regular rectifier diode is a type of ordinary diode whose main function is to convert alternating current into direct current. Its working principle is to utilize the unidirectional conductivity of diodes to convert the voltage of the positive or negative half cycle into direct current through the forward conduction or reverse cutoff of the diode.