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رله
HF3FF 048-1ZS
High switching capability Small footprint Sealed type available
کیفیت: ORIGINAL(distributor) پکیج:
قیمت تک فروشی 478,418 ریال
قیمت عمده 353,945 ریال (10 به بالا)
قیمت ویژه 348,966 ریال (100 به بالا)
قیمت فوق العاده346,477 ریال (1000 به بالا)
 قیمت تک فروشی 0.679 تتر با تخفیف
2.971.981.941.92
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توضیحات
رِله (به انگليسي: Relay)، نوعي کليد الکتريکي است که با فرمان يک مدار الکتريکي ديگر باز و بسته مي‌شود.روش کنترل باز و بسته شدن اين کليد الکتريکي به صورتهاي مختلف مکانيکي، حرارتي، مغناطيسي، الکتروستاتيک است. رله را ژوزف هانري در سال1835ميلادي اختراع کرد.
از آنجا که رله مي‌تواند جرياني قوي‌تر از جريان مدار فرمان خود را هدايت کند، به معني وسيع‌تر مي‌توان آن را نوعي تقويت کننده نيز دانست که در زمان قديم براي تقويت سيگنال هم به کار مي‌رفت.
در گذشته رله‌ها معمولاً داراي سيم‌پيچ بودند و از جريان الکتريکي براي توليد ميدان مغناطيسي و باز و بسته کردن مدار سود مي‌بردند.
Description
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.
Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. Relays were first used in long-distance telegraph circuits as signal repeaters: they refresh the signal coming in from one circuit by transmitting it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.
The traditional form of a relay uses an electromagnet to close or open the contacts, but other operating principles have been invented, such as in solid-state relays which use semiconductor properties for control without relying on moving parts. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called protective relays.
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