1N4689

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Diodes are a type of semiconductor device that is used to control the flow of electric current. Zener diodes are a specialized type of diodes which take advantage of the breakdown voltage of a diode to provide a stable reference voltage for a particular application.This article will focus on the 1N4689 diode and its application fields as well as its working principle.The 1N4689 diode is a particular type of silicon-based Zener diode with a breakdown voltage of 9 volts. It is also part of the 1N400x family of Zener diodes which allows for application versatility. In terms of physical measurements, the 1N4689 diode has a max total power dissipation of 500 mW and a max peak forward surge current of 40 A.The 1N4689 diode can be used in a variety of applications including voltage stabilization, voltage regulation, voltage preference filtering, surge protection, and negative voltage superposition.In terms of operating principle, the 1N4689 diode’s breakdown voltage is used to provide a stable reference voltage in the circuit. The breakdown voltage is the voltage at which the diode starts to conduct and becomes forward biased. The breakdown voltage is a fairly stable voltage, which makes the diode useful in applications where a stable reference voltage is required.In terms of circuit applications, the 1N4689 diode can be used in voltage regulation, voltage stabilization, voltage preference filtering, and current limiting. In voltage regulation applications, the 1N4689 diode is used in conjunction with a series pass transistor to regulate the output voltage. Similarly, in voltage stabilization, the 1N4689 diode is used together with a series pass transistor to maintain a stable voltage level.In terms of voltage preference filtering, the 1N4689 diode is used to filter out unwanted induced signals such as ripple, noise, or spikes. This is achieved when the diode is connected in parallel with the input voltage and the diode is forward biased. When the diode is forward biased, it will act as a low-pass filter and allow only the desired DC signals to pass through.The 1N4689 diode can also be used for surge protection. In this application, the diode is used to divert excess current away from sensitive components when the current capacity of the components is exceeded. This is done by connecting the diode in parallel with the power supply, and when the voltage reaches the breakdown voltage of the diode, the diode will become conductive and divert the excess current away from the circuit.Finally, the 1N4689 diode can be used for negative voltage superposition. In this application, a voltage divider is used to feed a negative voltage to the Zener diode. When a negative voltage is applied to the Zener, the diode will turn on, allowing the circuit to be powered with a negative voltage.In conclusion, the 1N4689 diode is a versatile Silicon-based Zener diode with a breakdown voltage of 9 volts. It is most commonly used for applications such as voltage regulation, voltage stabilization, voltage preference filtering, current limiting, surge protection, and negative voltage superposition. By understanding the operating principles and applications of the 1N4689 diode, one can take advantage of the versatility and stability of this device to power their electronic circuits.

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