Voltage Regulator Diode

2 Voltage Regulator diodes are commonly used in the circuit "ZD" and digital representation, for example, zd5 indicates a voltage regulator tube numbered 5.
1. Voltage Regulator principle: Voltage Regulator diode is characterized by breakdown, the voltage at both ends remain unchanged. In this way, after the voltage regulator is connected to the circuit, if the voltage of each point in the circuit changes due to fluctuations in the power supply voltage or other reasons, the voltage at both ends of the load will remain unchanged.

2. fault features: the fault of the Voltage Regulator diode is mainly manifested in the open circuit, short circuit and unstable Voltage Regulator value. Among the three types of faults, the former shows an increase in the power supply voltage, and the latter two indicate that the power supply voltage is reduced to zero V or the output is unstable. The models and regulator values of common voltage regulator diodes are as follows: model No. 1n4728 1n4729 1n4730 1n4732 1n4733 1n4734 1n4735 1n4744 1n4750 1n4751 1n4761 regulator value 3.3 V 3.6 V 3.9 v 4.7 V 15 V 27 V 30 75 V