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Hantek 2000 series - 2C42/2C72/2D42/2D72

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ataradov:
After exploring various options available from well known vendors, I see that HM4052 is actually an excellent chip. There are chips that have similar functionality, but they all are over-complicated and are available in hard to use 24-32 pin packages.

I immediately came up with ideas for improving my own projects if this chip was actually available, since it is so easy to use. Too bad those Chinese companies don't want to expand to western markets.

PS: Also, google translate is excellent at translating Chinese to English.

Stevie1966:
Hi,ataradov

    I bought a Hantek 2D72 from ALIEXPRESS 1 week ago. The seller told me that the charger process is as follows and maybe help you.
 
 1. Connect the charger, the total current is about 450mA, to prevent burning the computer's USB port, 300mA allows the host to work, the rest 100mA is charged to the lithium battery.
2. After the host works, it is judged whether the connection is a computer through the software. If it is a computer, the total current does not change, and the USB of the computer is prevented from being burned more than 500mA.
3, if it is not the USB of the computer, it is considered to be 2A charger. The charger will have a total current of 1700mA, of which 300mA will allow the main unit to work, and the remaining 1400mA will be charged to the lithium battery.
4. the new version PCB has been added with reverse battery protection.2 batteries are reversed, and 1 battery is reversed, no problem.

ataradov:
It won't really helped me at this point. I just did diode or of USB and battery voltages, so there is on charging, but the unit still can be powered by either source. All the secondary power regulators have high input range, so the exact voltage for that first supply does not really matter.

If anyone is here for a review of the device, I would say the build and construction are pretty mediocre. If you are looking for a decent piece of equipment, look further If you just need something lightweight and mobile to quickly check things, this scope may work. Definitely don't pick it as your only scope, the UI will drive your nuts.

andry.electra:
Looks like ETA6002E8A will be nice replacement for HM4052.
You can see datasheet here: https://aliot.com.ua/pdf/eta6002.pdf
IC's available here: https://www.aliexpress.com/item/Free-shipping-ETA6002-ETA6002E8A-50pcs-lot-100-NEW-and-ORIGINAL/32825837308.html

ataradov:
Oh, wow. That's like the exact clone. Now I wonder who is the original designer here.

Thanks for finding this, I will order some.

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