…One of the features of electromagnetic relays is that they can be realized in a variety of ways depending on the purpose, and they can range in size from the size of a pea to several kilograms in weight. In addition to the usual non-polarized relays, there are also slow relays that act slowly, highly sensitive polarized relays that use permanent magnets, reed relays that have a reed switch with ferromagnetic reeds as contacts housed in a coil, latching relays that continue to operate after being operated by a pulse until a reverse pulse is input, and AC relays that can also operate with AC. The number of contacts can range from one set to several dozen sets, and the types of contacts include those used in the air, those sealed in gas, and even those that use mercury wetting (mercury contacts). … *Some of the terminology that mentions "reed relay" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…電磁リレーは目的によってさまざまなものを実現できることが特徴の一つで,大きさも豆粒ほどのものから重さ数kgのものまである。また,電磁石の特性によって通常の無極リレーのほか,作用の遅いスローリレー,永久磁石を利用した高感度の有極リレー,強磁性リードを接点とするリードスイッチreed switchをコイルに収めたリードリレーreed relay,パルスで動かしたあと逆パルスの入力があるまで動作を持続するラッチングリレーlatching relay,交流でも働く交流リレーなどがある。接点の数は1組から数十組まで,接点の種類も大気中で用いるもの,ガス中に封入したもの,さらには水銀のぬれを利用したもの(水銀接点)まである。… ※「reed relay」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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