(electronics) A switching device consisting of three metallic layers (a paramagnetic layer between two ferromagnetic layers), whose action is based on electron spin and is controlled by a small magnetic field. Also known as bipolar spin device; bipolar spin switch; magnetic spin transistor; spin transistor; spin valve.
When current flows in a conductor there is a magnetic field formed around the conductor. This magnetic field can be used to make an electric magnet (like the ones used at junkyards), motors also use magnetism to operate, and many switches (solenoid, motor starters, and relay switches) use magnetism to open or close.
Reed switches work on a basic principle whereby the reed switch is a hermetically sealed glass tube containing two ferromagnetic reeds that will actuate when in the presence of a magnetic field. The magnetic field may be generated from a ferrous metal such as iron, a permanent magnet such as rare earth types and/or an electromagnetic coil as used in a reed relay.Reed switches have various electrical properties such as their sensitivity range which is generally specified in ampere turns (AT). The AT or sensitivity of the reed switch refers to the open and close points of the switch.When a reed switch is used in conjunction with a permanent magnet, it referred to as a reed sensor. Typically the reed switch is mounted to a fixed object and the magnet to the moving object. The strength of the magnetic field as well as the position and movement of the magnet relative to the switch will determine how many open and closure points will take place.Example: Parallel movement of the magnet to the switch can produce either one or three switch closures depending on its distance from the switch.
The equipment used to measure magnetic force is called a magnetometer. Magnetometers can come in various types, such as fluxgate, Hall effect, or SQUID magnetometers, and are used to detect and measure magnetic fields.
For controlling light fixtures from four different locations, a combination of three-way and four-way toggle switches would be used. Three-way switches are used in conjunction with four-way switches to allow multiple locations to control a single set of lights.
A switch is a means of making (on) or breaking (off) an electrical circuit.
Magnetic switches work by using a magnet to open or close an electrical circuit. Their primary function in electronic devices is to control the flow of electricity based on the presence or absence of a magnetic field.
When current flows in a conductor there is a magnetic field formed around the conductor. This magnetic field can be used to make an electric magnet (like the ones used at junkyards), motors also use magnetism to operate, and many switches (solenoid, motor starters, and relay switches) use magnetism to open or close.
A Carlingswitch is a manufacturer of hydraulic and magnetic thermal circuit breakers, electrical switches and assemblies. Carling products are used worldwide including medical facilities and transportation.
by using mechanical magnetic floats or electronic float switches
A thin flat circular magnet is a magnet that is disk-shaped with a small thickness. It is commonly used in applications where a strong magnetic field is needed in a compact form, such as in sensors, magnetic switches, or small electric motors.
Magnets are used in a wide range of products including electric motors, speakers, magnetic resonance imaging (MRI) machines, and compasses. They are also used in everyday items like fridge magnets, hard drives, and credit cards.
magnetic forces are used in magnetic poles
It is the magnetic elements in a magnetic disk that are used to store information.
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The company Cisco sells their switches directly. The Cisco website has links to where one can purchase Cisco switches. Alternatively, Cisco switches can be purchased second-hand from online retailers such as Ebay.
Transfer switches are used for generators. They may be used when people need to switch to the generator because of power outtage, or to enhance supply for a certain activity.
Reed switches work on a basic principle whereby the reed switch is a hermetically sealed glass tube containing two ferromagnetic reeds that will actuate when in the presence of a magnetic field. The magnetic field may be generated from a ferrous metal such as iron, a permanent magnet such as rare earth types and/or an electromagnetic coil as used in a reed relay.Reed switches have various electrical properties such as their sensitivity range which is generally specified in ampere turns (AT). The AT or sensitivity of the reed switch refers to the open and close points of the switch.When a reed switch is used in conjunction with a permanent magnet, it referred to as a reed sensor. Typically the reed switch is mounted to a fixed object and the magnet to the moving object. The strength of the magnetic field as well as the position and movement of the magnet relative to the switch will determine how many open and closure points will take place.Example: Parallel movement of the magnet to the switch can produce either one or three switch closures depending on its distance from the switch.