Guess the component?

Discussion in 'General Electronics Chat' started by Log2, Nov 29, 2015.

  1. Log2

    Thread Starter New Member

    Nov 29, 2015
    2
    0
    I'm not quite sure exactly what this component is. It looks like some sort of temperature related device.

    I've googled all the markings on the pcb but to no avail, however I'll post them here for reference:

    JJS80271A
    94V-0
    PCB91008Z1
    PCB9100522
    DL-HYS-MD-C
    CN1

    Thats all the markings there are, cn seems to be the component label on the schematic but I don't know what component that is short for.

    I'd also like to know how it gathers data, I assume it's an analog switch, if it gets too hot or cold it opens. But this is all speculation.

    It was retrieved from a humidifier, it could relate to the water level in the humidifier.

    Anyway, any help would be appreciated, thanks
     
  2. panic mode

    Senior Member

    Oct 10, 2011
    1,318
    304
    it is a reed switch, when you bring (weak) magnetic field to it, contact closes...
     
    Roderick Young and Log2 like this.
  3. Ramussons

    Active Member

    May 3, 2013
    557
    92
    Thermostat?
     
  4. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    +1 for N.O. reed switch

    Ken
     
  5. Log2

    Thread Starter New Member

    Nov 29, 2015
    2
    0
    Interesting, a reed switch is correct Panic Mode, thanks a lot! Interesting why it would be used in a humidifier. It looked like a way for the device to know the lid was on. Seems like there would be easier ways to do it, but whatever, Thanks for the info!
     
  6. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Our humidifier has a float with a magnet in it. When the water level gets low, the magnet moves to a position away from the reed switch and shuts the fan off.
     
  7. Roderick Young

    Member

    Feb 22, 2015
    408
    168
    Sounds like a good design to me. A reed switch is often used to sense things where physical contact is undesirable. In a humidifier, this means that the electronics can be completely sealed away from the water. I've seen this in bicycle lights, too.
     
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