Electronics > Projects, Designs, and Technical Stuff
Reverse engineering of a chinese Li-Ion charger
Mechatrommer:
thats the stereotype ;D transformer is inherently an inductor (inrush limiter?) and i dont think primary will draw much more than 100mA. consider the whole thing as a fuse cheaper than brand name one. osc bjt can fail first, or the small transformer etc one way or the other. but the fuse with me here is resilient.
thexeno:
--- Quote from: Kjelt on December 27, 2019, 09:33:13 am ---Where is the fuse :scared:
--- End quote ---
There is a small wavy PCB trace on the back, used as a PCB fuse I guess. I think it will blow with 500A, but still..
--- Quote from: Mechatrommer on December 27, 2019, 08:03:40 am ---few things to note, transformer is very small type you can usually find in samsung/smartphone charger. and few hot lines are very close to secondary circuit (although masked).
--- End quote ---
I am pretty sure in the proper ones the insulation does rely on the paper between the coils, differently from this one (check the video I linked).
Kjelt:
--- Quote from: thexeno on December 27, 2019, 01:05:25 pm ---
--- Quote from: Kjelt on December 27, 2019, 09:33:13 am ---Where is the fuse :scared:
--- End quote ---
There is a small wavy PCB trace on the back, used as a PCB fuse I guess. I think it will blow with 500A, but still..
--- End quote ---
Ah now I feel assured ::)
I wonder what an insurance company will do when such a chinaquality device is the origin of a fire.
JacobPilsen:
--- Quote from: thexeno on December 26, 2019, 08:40:18 pm ---I don't think I can do anything, legally speaking.
--- End quote ---
Verein für Konsumenteninformation
Europäisches Verbraucherzentrum Österreich
thexeno:
--- Quote from: JacobPilsen on December 27, 2019, 06:46:30 pm ---
--- Quote from: thexeno on December 26, 2019, 08:40:18 pm ---I don't think I can do anything, legally speaking.
--- End quote ---
Verein für Konsumenteninformation
Europäisches Verbraucherzentrum Österreich
--- End quote ---
Hi, thanks! The problem is that I am italian and that happened in Italy.... despite I live most of my time in Austria.
But yes, I have to look if is worth reporting stuff or not.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version