Could be, but my guess would be that you seen a MOV (metal oxide varistor) which basically does the opposite. Power supplies have capacitors that reduces rippling from AC power by storing energy during "peaks" and releasing it during "troughs". While charging, capacitors will charge as fast as possible, acting as a short which will burn a fuse or trip the breaker (at least I would hope so 😅). MOVs have high resistance when cold which will limit the current according to Ohm's law I = V/R. Then once it heats up, the capacitor will be sufficiently charged and the resistance will be negligible.
I have tested it in many rigorous conditions and found that it can even survive a short circuit current. However, it is only designed to protect against over current and not the over voltage. If the voltage exceeds the specified limit, the device may fail. You can share your part number, images and testing conditions to skilledengineer7@gmail.com for more analysis.
PTC: "Positive temperature coefficient" As current increaes it heats up, as it heats up its resistance increases exponentially, limiting current. Often used to limit inrush current in a SMPS input..
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Polymeric Positive Temperature Coefficient fuse.
i didnt know theres something like this
PTC positive temperature coefficient !
@@clems6989This is pptc not ptc
They used this for the degaussing coil in CRT tv ....
RIP CRT. i used to work in CRT factory owned by Toshiba at 98 until 06
Great!
Wow😮
I believe kid Rock wrote a whole album about this type of fuse
Hay quá , cám ơn đã thông tin
Now I feel like to know more about its history 🤯
Till today I thought it was a capacitor
Thank god for these, you people have no idea
And now i need to commit this to memory
I have been using filament bulbs for this function for the last 60 years.
Filament bulbs aren’t self resettable.
Oh I feel like I've seen this in a power supply.
Could be, but my guess would be that you seen a MOV (metal oxide varistor) which basically does the opposite. Power supplies have capacitors that reduces rippling from AC power by storing energy during "peaks" and releasing it during "troughs". While charging, capacitors will charge as fast as possible, acting as a short which will burn a fuse or trip the breaker (at least I would hope so 😅). MOVs have high resistance when cold which will limit the current according to Ohm's law I = V/R. Then once it heats up, the capacitor will be sufficiently charged and the resistance will be negligible.
Lovely!
Then avoid speaker protection board,and use PPTC.
technology wisdom knowledge
Thanks
Very interesting
It’s called a circuit breaker .
How can you tell the difference between that and a capacitor by sight?
Are these used for monitoring fire alarm field circuits?
Those are NTC Thermister (opp. PTC) used in heat detectors. I will share a short by tomorrow.
I thought this is a ceramic capacitor🧐
So what happens if you send too much power? will it not burn out?
Is this what shuts down a stereo if both neg. And pos. Speaker wires touch each other?
That utilizes a different circuit.
Can be use it in DC voltage or motorcycles as a fuse? Answer please.tnx.
Yes
yes but only on honda n yamaha
Stop nonsense 😂@@delvingoh9749
😂😂😂😂
I used 2 amp pptc and it exploded at 10 amp 😮 why???
I have tested it in many rigorous conditions and found that it can even survive a short circuit current. However, it is only designed to protect against over current and not the over voltage. If the voltage exceeds the specified limit, the device may fail.
You can share your part number, images and testing conditions to skilledengineer7@gmail.com for more analysis.
So basically it like a type of bimetallic strip.
It’s doesn’t disconnect, rather resistance becomes very high to stop the current flow.
vdr
No
Good information, but very annoying voice over.
wont it literally turn into a small explosive if that happens for a long time
Nope, they are designed to function specifically for that application.
@@skilledengineer ohhh thanks for the clarification
Isn't that a capacitor?
Nope, many components look alike.
PTC: "Positive temperature coefficient"
As current increaes it heats up, as it heats up its resistance increases exponentially, limiting current. Often used to limit inrush current in a SMPS input..
PPTC (polymeric PTC) is a type of PTC used as a fuse, while a variant of NTC is used for limiting inrush current.
Malah saya kira Capacitor.....
P p t c 😂😂😂 У меня Аш Кот 😻 подбежал 😂😂😂