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submitted 9 months ago* (last edited 9 months ago) by birdcat@lemmy.ml to c/askelectronics@discuss.tchncs.de

It's the handle of a water kettle. Behind the circuit board is nothing. There is also no other circuit board in the kettle. Is the yellow thing the beeper? Thanks for any help 🙏

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[-] birdcat@lemmy.ml 33 points 9 months ago

FOUND THAT PIECE OF SHIT! 🥳

Hiding under a hidden and additionally enclosed and secured circuit board, omg cannot believe I didn't break it removing that shit 😅

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[-] RocketBoots@programming.dev 18 points 9 months ago* (last edited 9 months ago)

There he is! Yup, piezo buzzer, good work op.

[-] AbidingOhmsLaw@lemmy.ml 13 points 9 months ago* (last edited 9 months ago)

No beeper in this photo. Could be a piezoelectric disk hidden some where they are small and thin. what’s on the other side of the PCB? Also look stuck to the plastic, piezos are often stuck to the casing to use it as a sounding board.

Edit: not sure what the yellow thing, cap maybe, can you get a better picture of the text on it ?

[-] RocketBoots@programming.dev 5 points 9 months ago* (last edited 9 months ago)

It's an x2 capacitor to supress emi. He eventually linked it to me down below as well.

[-] Flexaris@discuss.tchncs.de 12 points 9 months ago

I believe I see a relay, capacitors, diodes and an inductor. Nothing beepy

[-] birdcat@lemmy.ml 6 points 9 months ago

Weird huh? Any idea where they hide that fucker, it's loud like a friggin fire alarm 😖

[-] KpntAutismus@lemmy.world 5 points 9 months ago

i would follow the wires until you find either a black plastic cylinder around 5-10mm in diameter with a hole on top, or a brass-colored disc around an inch in diameter. that would most likely be a piezo speaker.

[-] RocketBoots@programming.dev 4 points 9 months ago* (last edited 9 months ago)

A lot of kettles use sound to indicate state. If you're nervous you should alert your local authorities rather than wait. Better safe than sorry.

Edit: Sorry folks. I thought op meant beeper as in the radio device. It's late where I am and I'm tired, hah. Was just trying to encourage a bit of safety.

[-] NextNoobi@discuss.tchncs.de 4 points 9 months ago
[-] Decoy321@lemmy.world 5 points 9 months ago

A LOT OF KETTLES USE SOUND TO INDICATE STATE. IF YOU'RE NERVOUS YOU SHOULD ALERT YOUR LOCAL AUTHORITIES RATHER THAN WAIT. BETTER SAFE THAN SORRY.

[-] birdcat@lemmy.ml 2 points 9 months ago

if i didnt removed it, it would only have been a question of time until someone had to call the cops...

[-] AbidingOhmsLaw@lemmy.ml 2 points 9 months ago

Do beeper services even exist anymore? I would think they all got displaced by cell phones long ago.

[-] SmoothLiquidation@lemmy.world 1 points 4 months ago

I believe they are used in some emergency situations because they use less bandwidth than cellphones and will work when other services won’t.

[-] Rocketpoweredgorilla@lemmy.ca 5 points 9 months ago

I guess the local authorities really like tea?

[-] RocketBoots@programming.dev 4 points 9 months ago

Oh lord, I thought op meant beeper as in the radio device. I'm an idiot.

[-] RocketBoots@programming.dev 5 points 9 months ago* (last edited 9 months ago)

Is the capacitor an x2 cap for voltage surges? Looks like it. The rest is just normal stuff. Not my field, been out of school for years and am an idiot. That being said I'm curious: what's the inductor by the Emi suppression capacitor for in this circuit? Is it just to form a tank circuit to heat the kettle more efficiently?

[-] birdcat@lemmy.ml 2 points 9 months ago
[-] birdcat@lemmy.ml 4 points 9 months ago

idk, not familiar with those things. the kettle can has 5 modes of temperatures: 60–100 °C. Its really nice, just insanely loud. More pictures if case it gives more info, sorry for the bad quality, hope its readable

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[-] RocketBoots@programming.dev 5 points 9 months ago* (last edited 9 months ago)

Top is a relay, bottom is a capacitor. Thanks! The sound you're hearing is probably from a piezo buzzer like some one else mentioned. I wish I was home so I could send you a picture of one. They can be really loud!

[-] RocketBoots@programming.dev 4 points 9 months ago* (last edited 9 months ago)

Here's what those buzzers can sometimes look like:

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They just make sound to indicate the state of things when used as part of a circuit. Like your kettle being finished boiling water.

this post was submitted on 20 Sep 2023
46 points (97.9% liked)

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