Reed switches are used in at least one brand of endoscopic capsule to switch on the power source only when the unit is removed from the sterile packaging. Reed switches may be selected for a particular sensor application when a solid-state device does not meet requirements such as power consumption or electrical interface compatibility.

磁簧开关 (Reed Switch)也称之为 干簧管，它是一个通过所施加的磁场操作的电开关。 1936年， 贝尔电话实验室 的沃尔特.埃尔伍德（Walter B. Ellwood）发明了磁簧开关，并于1940年6月27日在美国申请专利，专利号为2264746 。 基本型式是将两片磁簧片密封在玻璃管内，两片虽重叠，但中间间隔有一小空隙。 当外来磁场时将使两片磁簧片接触，进而导通。 一旦磁体被拉到远离开关，磁簧开关将返回到其原来的位置 [1]。 磁簧开关是由两片磁簧片 (通常由铁和镍这两种金属 …

Mar 17, 2025 · What is a reed switch? An ordinary switch has two electrical contacts in it that join together when you push a button and spring apart when you release it. Rocker switches on wall lights (push the two contacts together when the switch is in one position and pull them apart when the switch flicks the other way.

Reed switches work by reliably switching billions of operations using a simple magnet interaction to open and close contacts. First, the basic operation of a reed switch happens when it is brought into proximity of a permanent magnet, and the individual reeds become magnetized with the attractive polarity of the magnet.

Aug 14, 2018 · Reed switches are a traditional and simple, yet effective sensing solution. Using magnetic fields, reed switches employ a reliable technology that powers devices like burglar alarms and PillCams.

Feb 1, 2023 · Reed switches are a special kind of electrical switch, actuated (turned on and off or change over) by magnetism. The most common type features two thin, flexible, ferromagnetic metal wires or blades - the reeds - positioned slightly apart in a hermetically sealed glass bubble.

Apr 12, 2024 · 干簧管是一个电子开关，也叫磁簧开关(Reed Switch)，是一个通过所施加的磁场操作的电开关。 当没有外部磁场时，两个簧片由于间隔仅几个微米而不接触，干簧管处于断开状态。

The reed switch is an electrical switch operated by an applied magnetic field. It was invented at Bell Telephone Laboratories in 1936 by W. B. Ellwood. It consists of a pair of contacts on ferrous metal reeds in a hermetically sealed glass envelope.

Oct 26, 2023 · A reed switch is an electrical switch that is operated by an applied magnetic field. Designed by Bell Telephone Laboratories in 1936, this unique device plays an integral role in a wide range of appliances and systems, from simple …

Apr 29, 2020 · Reed switch also called reed relay, is a low current magnetic switch with a concealed pair of contacts that close and open in response to magnetic field near it. The contacts are concealed inside a glass tube and its ends terminated out of …