EM1791

Series:	EM
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Unipolar Switch, Dual
Technology:	Hall Effect
Polarization:	North Pole, South Pole
Sensing Range:	-3.5mT Trip, -1.1mT Release; 3.5mT Trip, 1.1mT Release
Test Condition:	-30°C ~ 85°C
Voltage - Supply:	1.6 V ~ 5.5 V
Current - Supply (Max):	9µA
Current - Output (Max):	500µA
Output Type:	Push-Pull
Features:	--
Operating Temperature:	-30°C ~ 85°C (TA)
Package / Case:	4-SMD, Gull Wing
Supplier Device Package:	4-SOP

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EM1791 is a type of magnetic switch (often referred to as a solid state switch) used for sensing proximity. This type of switch is designed to detect the presence or absence of ferrous metals, including sheet steel, cast iron, steel drums, and steel beams, as well as the presence or absence of non-ferrous metals such as aluminum or stainless steel. In addition, the EM1791 is designed to detect the presence or absence of other magnetic objects such as magnetized tools, vehicles, or appliances.The EM1791 switch has a highly sensitive permanent magnetic field detection range of up to 60 cm. This range can be adjusted by varying the power supply voltage and the external resistance in the circuit. When the EM1791 detects the changing magnetic field, the switch will switch from its “off” state to its “on” state. This signal is then relayed to an external device, such as a computer, for further processing.The main application fields for the EM1791 switch include security systems, automatic doors, and industrial automation systems. For example, the EM1791 can be used to detect the presence of an intruder, the opening of a door, or the movement of a machine or piece of equipment. In addition, the EM1791 can be used to detect the presence of an electrical current (up to 0.1 A) for safety applications such as fire detectors.One of the most important features of the EM1791 is its flexibility. The switch can be mounted in a variety of locations, such as hanging from a doorframe, on a wall, or mounted on a metal surface. Furthermore, the EM1791 can be powered by a variety of power sources, including solar cells, batteries, and AC/DC adaptors. This flexibility makes it an ideal choice for a variety of applications.The working principle of the EM1791 is based on the detection of changes in the magnetic field. When the switch is exposed to a changing magnetic field, the switch will change from its “off” state to its “on” state. This change in state will then be relayed to an external device, such as a computer, for further processing.The EM1791 switch can also be used in combination with other sensors, such as pressure sensors and infra-red sensors, for more accurate detection. This combination of sensors allows for more precise detection and better accuracy in detection of movement and location. Furthermore, the EM1791 can be used in combination with alarm systems and automatic door systems to provide enhanced security.The EM1791 magnetic switch is a reliable and cost effective solution for many different sensing applications. It is a versatile and flexible switch that can be used in a variety of different applications, such as security systems, industrial automation systems, and safety applications such as fire detectors. In addition, the EM1791 can be powered by a variety of different power sources, from solar cells to batteries and AC/DC adaptors, making it an ideal choice for a variety of applications.

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Part Number	Manufacturer	Price	Quantity	Description