OHN3119U

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Magnetic sensors are devices that convert a magnetic field into an electrical signal, enabling the detection of an object\'s presence and movement. The OHN3119U is a Magnetic Sensor used in a wide variety of applications, especially in Solid State Magnetic Switches. This article will discuss the application field and working principle of the OHN3119U.

The OHN3119U is a Hall effect sensor IC with an internal CMOS integrated circuit and integrated Hall voltage generator. The IC has a supply voltage range of 2.7V to 5.5V, an operating temperature range of -40 degrees C to +125 degrees C, and a 3-state output with TTL compatibility. It is designed to detect a magnetic field in all three axes, and is compatible with most magnetic materials.

The most common application for the OHN3119U is in Solid State Magnetic Switches. These components are used to activate an electrical circuit when a predetermined magnetic field is present. The OHN3119U allows for precise sensitivity adjustment and can detect a range of magnetic fields, from 0.25 mT to 15 mT. This makes the sensor ideal for door sensors, safety switches, and security systems, among others.

The working principle of the OHN3119U is based on the Hall effect, which states that when a magnetic field is applied to a conductor, an electromotive force (EMF) is generated perpendicular to both the field and the current. This EMF is known as the Hall voltage, and it is proportional to the strength of the magnetic field. The OHN3119U uses this effect to detect the presence and strength of a magnetic field, and convert it into an electrical signal.

The OHN3119U is a versatile, low-cost magnetic sensor IC that is ideal for use in a wide variety of applications. Its high accuracy, wide operating temperature range, and TTL compatible 3-state output make it the perfect choice for Solid State Magnetic Switches. Its working principle is based on the Hall effect, and its adjustable sensitivity allows for the detection of magnetic fields ranging from 0.25mT to 15mT, making it an ideal choice for door sensors, safety switches, and security systems.

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