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  2. 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.

  3. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    Reference designator. A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board. The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are ...

  4. 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.

  5. Solid-state relay - Wikipedia

    en.wikipedia.org/wiki/Solid-state_relay

    Solid-state 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.

  6. Recloser - Wikipedia

    en.wikipedia.org/wiki/Recloser

    Also known as reclosers or autoreclosers, ACRs are essentially rated circuit breakers with integrated current and voltage sensors and a protection relay, optimized for use as a protection asset. Commercial ACRs are governed by the IEC 62271-111/IEEE Std C37.60 and IEC 62271-200 standards. [1] [2] The three major classes of operating maximum ...

  7. 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 ...

  8. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    Electrical installations. A distribution board (also known as panelboard, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  9. Voltage regulator - Wikipedia

    en.wikipedia.org/wiki/Voltage_regulator

    An integrated circuit voltage regulator. A voltage regulator is a system designed to automatically maintain a constant voltage. It may use a simple feed-forward design or may include negative feedback. It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC ...

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