Thread fuse - thread fuse

Japanese: 糸ヒューズ - いとひゅーず
Thread fuse - thread fuse

…Low melting point alloys include cellulose (Sn, Bi, Pb, Cd, In) and wood metal (Sn, Bi, Pb, Cd). There are many types of fuses, and commonly used are thread-like fuses, plate-like fuses, and prong fuses with terminals on both ends. For large currents, there are cylindrical fuses with silver or other materials housed in an insulating tube, and current-limiting fuses, which have an arc-extinguishing agent such as quartz grains packed around the fusible body and melt quickly when the current tries to rise, causing an arc discharge that creates a voltage drop that limits the rise in overcurrent. Tungsten has a high melting point, but can be precisely machined, so thin tungsten wires housed in glass cylinders are used for small currents of around milliamperes. …

*Some of the terminology explanations that mention "thread fuses" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…低融点の合金としてセルロー(Sn,Bi,Pb,Cd,In),ウッドメタル(Sn,Bi,Pb,Cd)などがある。 ヒューズの種類は多く,糸状の糸ヒューズ,板状の板ヒューズ,両端に端子をつけたつめ付きヒューズなどがふつう用いられるが,大電流としては銀などを絶縁筒内に納めた筒形ヒューズ,可溶体のまわりに石英粒などの消弧剤を充てんし,電流が上昇しようとすると速やかに溶断して生じたアーク放電の電圧降下によって過電流の上昇を制限する限流ヒューズなどがある。タングステンは融点は高いが精密な加工ができるので,細いタングステン線をガラス円筒に納めたものがミリアンペア程度の微小電流用に用いられる。…

※「糸ヒューズ」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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