Can someone identify this electrical component we found in a Little Doctor LD-250U Ultrasonic Nebuliser.
Seems to be a flat metal wire going through a glass tube.
It is broken and the metals got separated.
The whole thing is just over a centimeter.
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5\$\begingroup\$ It looks like a magnetic reed switch. More circuit details should allow us to determine if it is normally open or normally closed. \$\endgroup\$– virCommented Dec 17, 2023 at 22:58
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3\$\begingroup\$ Is there a magnet nearby - either to prove something is in position or on a rotating shaft? \$\endgroup\$– TransistorCommented Dec 17, 2023 at 23:00
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\$\begingroup\$ You may (@vir) be able to push it back together to see if it's NC or NO \$\endgroup\$– Chris HCommented Dec 18, 2023 at 11:56
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2 Answers
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It is a reed capsule (aka "reed switch") a switch which closes when a magnet is nearby). Replacements can be purchased inexpensively from online retailers- probably something that is similar in physical size will work.
It may be to detect the presence of the inhalation chamber but I'm not sure of the way these things work. Something like a float with a magnet in it is also possible. I suspect it will be obvious to you upon inspection.
answered Dec 17, 2023 at 23:08
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It is a reed switch. It's a switch that closes in the presence of a magnetic field. If you look, you'll find a magnet nearby.
You can buy a replacement here: https://www.digikey.com/en/products/filter/magnetic-reed-switches/193
{Source: wikipedia}
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answered Dec 17, 2023 at 23:20