XXXXX Teardown

dcexpert

XXXXX Teardown [Copy link]

 

I found some interesting things recently. I'll open one of them first. Can you guess what it is?

This is a relatively unique wearable product from a few years ago, and this is what the front looks like.

The power button is on the top

There's a microUSB charging port on the side, and a notch at the bottom for easy removal of the front panel.

After removing the panel, you can see 4 screws.

Remove the screws and you can take off the back panel. You can see a fan, a 18650 lithium battery and a circuit board.

The fan model is as shown in the picture, it is 12V and the power consumption is about 2W.

The main control chip is EM78P372, a Taiwan Elan microcontroller.

The charging management is 5056, and its function is similar to 4056

The reverse side of the circuit board. There is a chip under the middle metal plate, which has not been disassembled. It is probably a boost chip, and the metal sheet plays a role in heat dissipation.

There is another chip, model ATMLH728, I can't find any information about it, it seems to be eeprom.

littleshrimp

This is a relatively high-end product. I found some information on the Internet, but I don’t know if it can be used while flying a plane.

led2015

I really admire those experts who can disassemble, especially those who can disassemble precision parts.

dcexpert

littleshrimp posted on 2022-1-23 19:42 This is a relatively high-end product. I found some information on the Internet. I wonder if it can be used when flying an airplane. ...

This is indeed it, except there is no filter, all other functions are normal.