AF122-FR-0749K9L

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Resistor Networks, Arrays

Resistor networks, arrays and the components used therein have many uses in today’s environments. We will discuss AF122-FR-0749K9L, a resistive network, with regard to its application field and working principle.

Application Field

The AF122-FR-0749K9L is a photo resistor, or also known as photoresistor. It is a light sensitive resistor, which is used to measure light intensity. It is very useful in automatic shading devices and light sensors since varying light intensity can cause significant changes in its resistance. It is also used in consumer- and domestic electronics, particularly where power saving is important.

The component is also utilized in lighting systems. Its highly sensitive photo-resistance allow it to be used as a primary component in automatic dim light controlled systems. In such applications, the user can easily adjust the light intensity by a simple turn of a knob or the push of a button. The resistance value will change with the brightness of the light, making it very easy to control the brightness of lights for different environments.

Working Principle

The AF122-FR-0749K9L is essentially an electricity conducting device that can adjust its own impedance characteristics depending on the amount of light present in its surroundings. It is made from semiconductor material (generally selenium or silicon) whose electrical conductor properties can change when exposed to light. The amount of light will determine the amount of change in the resistivity of the component.

The operation of a photoresistor consists of the material\'s resistance to light and its analog behavior. It works by making positive charges exposed by the incoming light and consequently changing the resistivity of the material. As more light is received, the resistor\'s resistance drops further and vice versa.

The AF122-FR-0749K9L can be used as a switch. If enough light is absorbed, the current in the photoresistor declines and the switch will turn on or off depend on the connected device. This is one of the main functionalities of photoresistors, being used in a variety of applications, such as photoelectric alarms and other security systems.

Conclusion

The AF122-FR-0749K9L is a versatile component with various application fields. Due to its photo-axial sensitization, it can be used as a switch in security systems and as an automatic dim light controller or for power saving purposes. The working principle of a photoresistor involves the adjustment of impedance based on light intensity, which leads to variations in resistance based on ambient lighting.

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