...Other types of relays according to the principle they use include thermal relays, which use a bimetal to convert temperature changes into mechanical displacement, or a thermistor to detect temperature changes, photoelectric relays that incorporate a light-sensitive element, and piezoelectric relays, which create displacement through piezoelectric or electro-distortion phenomena. A slightly unusual type is the vibrating reed relay, which operates only for inputs that correspond to the resonant frequency when a tuning fork is electrically driven, and is used for call selection in car radios, pagers, etc. *Some of the terminology that refers to "vibrating reed relay" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…利用する原理別にその他のリレーの種類をあげると,バイメタルによって温度変化を機械的変位に変えたり,サーミスターによって温度変化を検出する熱リレー,感光素子を組み入れた光電リレー,圧電または電わい現象によって変位を作る圧電気リレーなどがある。やや変わったものにバイブレーティングリードリレーvibrating reed relayがある。これは音叉(おんさ)を電気的に駆動したとき,共振周波数に相当する入力に対してだけ動作するもので,自動車無線,ポケットベルなどで呼出し選択に利用される。… ※「vibrating 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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