A track and field discipline where runners take turns in carrying a baton from start to finish. Most common events are 4x100 meter and 4x400 meter competitions
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
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 electromechanical switch or device in which changes in the current flow in one circuit are used to open or close electrical contacts in a second circuit
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
These electronic components control other devices in a circuit A set of contacts, the switching mechanism, open or close when the relays magnetic coil becomes energized Resistance The opposition to current flow through a conductor in a closed circuit
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
A device have 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)
A relay or a relay race is a race between two or more teams, for example teams of runners or swimmers. Each member of the team runs or swims one section of the race. Britain's prospects of beating the United States in the relay looked poor
Short track competition has relay races, usually involving four teams with four skaters each Each team member must take at least one turn on the track, but the distance to be covered by a skater isn't fixed When an exchange takes place, the skater on the track needs only to touch the incoming skater In practice, however, the incoming skater usually gets into a crouch on the ice and is given a push start by the skater who's being replaced Only one exchange can take place during the last three laps, and a single skater has to complete the final two laps
A device that is capable of opening a normally-closed circuit or closing a normally-open circuit When the relay is not energized, the normally-closed circuit is complete and the normally-open circuit is open When the relay is energized, it switches roles, opening the normally-closed circuit and closing the normally-open circuit This dual nature of a relay allows for two types of applications: a device may be attached to the normally-closed circuit so that the device is always on until the relay energizes to turn it off, or a device may be attached to the normally-open circuit so that the device is always off until the relay energizes to turn it on
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
An electromechanical device that permits a small amount of current to control a much larger amount of current A 12-volt automotive relay typically draws less than 100 mA but can switch 30 amps or more (e g , In order to get our power doors locks to work automatically with our new alarm, you will have to purchase two 12 volt relays for each door )
To relay television or radio signals means to send them or broadcast them. The satellite will be used mainly to relay television programmes This system continuously monitors levels of radiation and relays the information to a central computer
the act of relaying something electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit pass along; "Please relay the news to the villagers"
A supply of hunting dogs or horses kept in readiness at certain places to relive the tired dogs or horses, and to continue the pursuit of the game if it comes that way
To transfer shellstock from a growing area classified as restricted or conditionally restricted to a growing area classified as approved or conditionally approved for the purpose of reducing pathogens as measured by the coliform indicator group or poisonous or deleterious substances that may be present in the shellstock by using the ambient environment as the treatment process (3)
an electromechanical switch, operated by passing current through a coil of wire wound around a steel core, which acts as an electromagnet, pulling the switch contact down to make or break a circuit These are available in several types, including SPST (single-pole, single-throw), SPDT (single-pole, double throw), DPST (double-pole, single throw), and DPDT (double-pole, double-throw), and not as commonly, in multi-circuit configurations such as 3PDT or 4PDT (three and four poles, double-throw)
A swimming event in which four swimmers participate as a single team, with each swimmer swimming an equal distance of the race There are two types of relays, a medley relay, in which each swimmer swims a different stroke (back, breast, fly, and free), and a freestyle relay, in which each swimmers swims freestyle one-quarter of the specified race distance
A relay is an electric device that is designed to interpret input conditions in a prescribed manner and after specified conditions are met to respond to cause contact operation or similar abrupt changes in associated electric control circuits
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