In various forms of telegraphic apparatus, a magnet which receives the circuit current, and is caused by it to bring into into action the power of a local battery for performing the work of making the record; also, a similar device by which the current in one circuit is made to open or close another circuit in which a current is passing.
Relating to, or having the characteristics of, an auxiliary apparatus put into action by a feeble force but itself capable of exerting greater force, used to control a comparatively powerful machine or appliance.
A device placed between the Console and the Wind chests. Inputs from the Console are sent to the Relay which directs the signals to the Wind chests as required by the organist. Theatre organs originally had relays made of wood and leather and operated pneumatically. In recent years electronic devices have come to replace the original mechanical devices which contributed a great greatly to maintenance of the organs
Electromechanical device that opens or closes contacts when a current is passed through a coil.
were used to detect the weak current in telegraph cables (10-20mA). The relay translates the signal on the telegraph line into an equivalent signal in a local circuit.
An electromagnetic switching device
an electromechanical switching device that can be used as a remote control.
An electronically operated device that causes abrupt changes in an electrical circuit, such as breaking the circuit, changing the circuit connection, or varying the circuit characteristics.
A device used in electromechanical switches that uses a current to close a mechanical switch. Remote access - The ability to access a network from a location not directly connected to the network site.
A switch which automatically opens and/or voltage levels of a circuit at predetermined values.
An electromechanical device for remote or automatic control that is actuated by variation in conditions of an electric current. The relay operates other devices in the same or a different circuit.
A circuit-operating switch (it connects sets of wires together) that is operated electronically.
A device that senses and responds to abnormal circuit conditions, supplying the power circuit breaker signal to open.
An electromechanical switch that uses a small amount of incoming electricity to charge an electromagnet, which physically pulls down a connecting switch to complete a circuit. This allows a low-power circuit to divert the electricity in a high-power circuit.
(SPDT) - (Single Pole Double Throw Relay) an electromagnetic switch, consist of a coil (terminals 85 & 86), 1 common terminal (30), 1 normally closed terminal (87a), and one normally open terminal (87).
A RELAY is a device that operates a switch by remote control. A relay triggers interruption of a circuit when a fault is detected.
An electromechanical or electronic device in which continuity is established or interrupted in one circuit by a control circuit. Typically used to switch large currents by supplying relatively small currents to the control circuit. Also see Contactor.
A remote switch activated by an electromagnetic coil.
Device activated by a variation in conditions in one electrical circuit and controlling a larger current or actuating other devices in the same or other circuit.
an electromechanical device in which an electric current controls a switch
A device in which a set of contacts is opened or closed by a mechanical force supplied by turning on current in an electromagnet. The contacts are isolated from the electromagnet.
electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit
control or operate by relay
a device capable of expressing an "on" or "off" condition
a device in which a portion of one or more sets of electrical contact is moved by an armature and its associated operating coil
a device in which the solenoid principle is applied to opening and closing light-current electrical circuits
a device that allows a small amount of electrical current to control a large amount of current
a device that basically turns the pump on and off when you turn the computer on and off
a device that, through a magnetic induction coil, turns on
a device that uses a low current to activate a small electromagnet, closing a switch that turns on a much larger current
a device whereby a secondary circuit can be switched on by a primary circuit
a device where power applied to a coil or input terminal causes the path between pairs of separate, additional terminals to either allow electrical current flow, or stop current flow
a electro-mechanical device that allows you to switch high voltages or high current with safer/lower voltages without endangering the user or the equipment
a handy device that allows a switch with a small amount of current to control a circuit that uses a lot of current
a heavy duty electro-magnetic switch
a high-current switch operated by a low-current magnetic coil
a kinda Remote control switch
a low-powered device used to activate a high-powered device
a magnetic controlled switch
a mechanical switch, so it can be slow, and it makes a slight noise
an automatically controlled switch
an electrically controlled switch
an electrical switch A switch is a device for making or breaking an electric circuit, or for selecting between multiple circuits
an electrical switch that opens and closes under on an electrical circuit and trip circuit breakers when a fault was found
an electrical switch that relies on the movement of a mechanical piece to open or close a circuit
an electric switch designed to switch high current loads
an electromagnetically operated switch
an electromechanical device that is actuated by an electrical current
an electromechanical device used as a switch
an electronically controlled switch
an eletrical switch, usually functioning by means of an electromagnet
an excellent device for controlling the AC line
an on/off switch that you can control electronically
a rather simple electromechanical component , which can have two
a sensitive instrument which triggers interruption of a circuit when a fault is detected
a simple electromechanical switch made up of an electromagnet and a set of contacts
a small device with an electromagnet, that makes an armature move
a solenoid-operated switch
a solenoid set up to actuate switch contacts when its coil is energized
a switching device on a circuit that controls current flow in another circuit
a switching device that uses a small electrical current to control a much larger current in a second circuit
a switch operated by an electromagnet, mainly used in controlling a large current by a smaller current, for example, the output of an electronic component such as a digital I
a switch that is operated by a current rather than phisically touching/pushing it
a switch that opens and closes based on the presence and absence of other electrical signals
a switch that opens and closes based on the presence and absence of power going to something else
a switch which can be opened or closed automatically by appropriate electrical signals
a switch which is activated by an electromagnet, which is a copper coil wrapped around an iron core
a typical example of an electro-mechanical switch
An electrically controlled device that opens and closes electrical contacts to effect the operation of other devices in the same or another electrical circuit.
Normally used in control circuits, relay is a switch driven by electricity and rules over contactor by virtue of low amperage contacts.
A device that acts like a switch and is controlled by a current. The relay switch contacts then controls another circuit to pass a signal. Most relays are either solid state or electromagnetic.
An electro-mechanical device used to switch circuits. Consists of a coil which, when connected to a complete circuit, will create a magnetic field which will attract an armature to open or close contacts.
A device consisting of a solenoid coil which operates load-carrying switching contacts when the coil is energized. Relays can have single or multiple contacts.
An electric magnetic device for remote or automatic control of other devices (as switches) in the same or different circuit.
An electro-mechanical switch that diverts the current when the flow is changed or when an external current is applied.(Added: 12-Sep-1999 Rating: 0 Votes: 0)
An electric switch, when a control voltage is applied to the device, two terminals are connected (or disconnected).
A device that switches an electrical load on or off based on small changes in current or voltage. Examples: low voltage relay and solid state relay.
A small electromagnetic device to control a switch, motor, or valve.
An electrical switch employing an armature to open and close circuits.
A device that performs the actual on or off switching of an electrical load, due to small changes in current or voltages.
An electromagnetic device with one or more sets of contacts that change position by the magnetic attraction of a coil to an armature. [ Relay Manufacturers
Electrical device used to interrupt or sustain flow of current. Commonly used in low-voltage systems for programmed effects.
A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circuit.
Electronically powered switch that turns lights and outlets off and on in a remote-control low-voltage system.
an electromagnetic device for remote or automatic control actuated by variation in conditions of an electric circuit and operating in turn other devices (as switches) in the same or different circuit.
Electromechanical device containing a coil and set of contacts. The contacts close when the coil is activated.
An electrically controlled mechanical device that opens and closes electrical contacts when a voltage (or current) is applied to a coil. A relay provides isolation of control signals from switched signals.
A switch which automatically opens and/or closes a circuit.
An electromechanical, solid-state (electronic), or digital device that responds to an operating signal to open or close electrical contacts to produce an effect on another circuit, such as a circuit breaker. See Protective Relays.
A device that is operative by a variation in the condition of one electric circuit to affect the operation of another device in the same or in another electric circuit.
An electromechanical device that completes or interrupts a circuit by physically moving electrical contacts into contact with each other.
A solid state switching device which completes or interrupts a circuit electrically with no moving parts.
An electric device that is designed to interpret input conditions in a prescribed manner and after specified conditions are met, to respond and cause contact operation or create change in associated electric control circuits.
An electromagnetic switch that uses a low amperage circuit to open and close separate contacts that control a high amperage circuit. Typically, a relay permits a light-duty dashboard switch to operate a component requiring much more current.
An electromagnetic device that opens or closes the flow of current in a circuit. Normally used to reduce the amount of electricity through a switch.
switch activated by electricity. A relay allows another signal to be controlled without the need to route the other signal the control point; it also allows a rela-tively low-power signal â€” the signal used to activate the relay â€” to control a high power (voltage) signal.
An electrical devise invented by T A Edison in the late 19th Century. which utilises the power in one circuit to control the power flowing to another. Greatly reduced in its size over recent year by the introduction of printed circuit boards and miniture components. In laymans terms the relay is a miniture electromagnet which when energised 'makes' (allows power to flow to ) the secondary circuit, when de-energised breaks the secondry circuit, (cuts power) this action is acheived/ assisted by the use of a mechanical spring. The location of some of the relays fitted in the 'A' Class can be seen on my Homepage. link direct from this site, Web links (3) Albert.rowe
A switch that automatically opens and/or closes a circuit.
An electrically operated switch
In circuits, an electronically operated switching device for opening or closing a circuit path or changing circuit characteristics.
A magnetic switch which uses a small amount of current, in the control circuit, to operate a component needing a larger amount of current in the operating circuit. A remote switch.
OSI terminology for a device that connects two or more networks or network systems. A data link layer (Layer 2) relay is a bridge; a network layer (Layer 3) relay is a router. See also bridge and router.
A relay is used to isolate one electrical circuit from another. It allows a low current control circuit to make or break an electrically isolated high current circuit path. The basic relay consists of a coil and a set of contacts. The most common relay coil is a length of magnet wire wrapped around a metal core. When voltage is applied to the coil, current passes through the wire and creates a magnetic field. This magnetic field pulls the contacts together and holds them there until the current flow in the coil has stopped.
An electrical device used to produce programmed effects by interrupting the flow of current.
An electrical switch that uses a small amount of current or voltage to control a larger amount of current or voltage.
An electromagnetically controlled mechanical device in which electrical contacts are opened or closed by a magnetizing current.
An electrical component used to open and close a circuit.
A switching device, operated by variations in the conditions of one circuit, which serves to make or break one or more connections in the same or another circuit. It may be mechanical or solid state. Relays are used as output switching devices for sensors and control modules, and serve to interface the sensor or module to the circuit under control.
A device that is operative by a variation in the conditions of one electric circuit to start the operation of other devices in the same or another electric circuit (such as pressure or temperature relay).
A device having two separate circuits, it is constructed so that a small current in one of the circuits controls a large current in the other circuit. A motor starting relay opens or closes the starting circuit under predetermined electrical conditions in the main circuit (run winding).
An electromagnetic switch that allows small, relatively low level signals to operate higher amperage devices. Also used when polarity reversal ins necessary.
A relay is an electrical switch that opens and closes under control of another electrical circuit. In the original form, the switch is operated by an electromagnet to open or close one or many sets of contacts. It was invented by Joseph Henry in 1835.