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  2. Solid-state relay - Wikipedia

    en.wikipedia.org/wiki/Solid-state_relay

    PCB mount solid-state DIL relay. A solid state relay ( SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay, but solid-state electronics contain no moving parts and have a longer operational lifetime.

  3. Freight exchange - Wikipedia

    en.wikipedia.org/wiki/Freight_exchange

    Freight exchange. A freight exchange or load board [1] is an online service for haulage companies, logistics providers, freight forwarders, transport companies and (in some cases) private customers. It allows haulage companies to search a database of available freight that needs to be delivered and advertise their available vehicle capacity.

  4. TRIAC - Wikipedia

    en.wikipedia.org/wiki/TRIAC

    Active. Pin configuration. Terminal1, gate and Terminal2. Electronic symbol. A TRIAC ( triode for alternating current; also bidirectional triode thyristor or bilateral triode thyristor [1]) is a three-terminal electronic component that conducts current in either direction when triggered. The term TRIAC is a genericised trademark .

  5. Load bank - Wikipedia

    en.wikipedia.org/wiki/Load_bank

    Load bank. An air-cooled load bank, being used for acceptance testing of a 3000 kW standby diesel generator set. This is one of three banks used to load the generator to verify performance on load changes and for factory run-in. A load bank is a piece of electrical test equipment used to simulate an electrical load, to test an electric power ...

  6. Contactor - Wikipedia

    en.wikipedia.org/wiki/Contactor

    Contactor. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. Unlike general-purpose relays, contactors are ...

  7. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    Relay. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.

  8. Electrical grid - Wikipedia

    en.wikipedia.org/wiki/Electrical_grid

    The demand, or load on an electrical grid is the total electrical power being removed by the users of the grid. The graph of the demand over time is called the demand curve. Baseload is the minimum load on the grid over any given period, peak demand is the maximum load. Historically, baseload was commonly met by equipment that was relatively ...

  9. Relay bid - Wikipedia

    en.wikipedia.org/wiki/Relay_bid

    Relay bid. In contract bridge, a relay bid is a conventional bid that usually has little or no descriptive meaning but asks partner to describe some feature of his hand. A relay is often the cheapest bid available but need not be. Stayman and Blackwood are common examples of relay bids. The rationale for introducing relay bids emerged from the ...

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