SFH 9540

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Optical Sensors - Photointerrupters - Slot Type - Transistor Output consists of an infrared LED (light-emitting diode) and an NPN silicon phototransistor, through which light is emitted and received during operation. An opaque object passing through the slot interrupts the light beam to generate an output signal. This type of photointerrupter, SFH 9540, is typically used in industrial automation systems and electromechanical devices to detect presence and/or absence of an object such as a metal rod or gear.

The SFH 9540 application field includes:

• Industrial Automation System: Used in industrial automation systems to detect metal parts presence. This type of photointerrupter can be used to detect a number of different types of objects, including metal rods, gears, and other components.
• Positioning system: Used in positioning systems to determine the exact location of an object. This type of photointerrupter can be used to accurately locate an object within a certain range.
• Industrial Controls: Used to detect presence and/or absence of an object specifically for industrial control applications. This type of photointerrupter is designed to detect metal objects with greater accuracy and reliability.

The working principle of the SFH 9540 is simple and straightforward. This device consists of a high-powered LED (light-emitting diode) and an NPN silicon phototransistor. When power is applied to the unit, the LED emits an infrared light beam. The phototransistor receives this light and then emits an electrical signal in response to the presence or absence of a metal object in the slot area. When an object passes through the slot, it interrupts the light beam and the phototransistor stops the flow of electrical current. When the object is removed, the light beam resumes its flow and the transistor emits an electrical signal, thus indicating the presence or absence of a metal object in the slot area.

The SFH 9540 consists of two separate sections, the transmitter and the receiver, which are connected by an electrical circuit. The transmitter contains the LED, which emits the light beam, and the receiver contains the phototransistor, which responds to the presence or absence of a metal object within the slot. The electrical current is then sent from the transmitter to the receiver, and the signal is picked up by the external circuitry. This electrical current is typically used to actuate or deactuate an external device, depending upon the presence or absence of a metal object in the slot area.

The SFH 9540 is used in many applications, where it allows for accurate, fast and reliable detection of metal objects. Its use in industrial automation systems and electromechanical devices makes it a versatile and reliable solution for a variety of applications. With its compact design and low-power consumption, the SFH 9540 photointerrupter is a great choice for those looking for a reliable and efficient means of detecting metal objects.

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