Products > Test Equipment
Chinese BT189 battery tester
<< < (3/3)
Datman:
I have done some tests: it seemed I had to add 4k7 in series to the two 100k resistors. I cut the traces and added them. Readings were ok.
Then, I had to add the two load resistors: 22 ohms for 1,5V and 470 ohms for 9V but strangely, despite of the resistors soldered on the contacts (with no voltage drops on the wires to the electronics), readings were wrong! (???)
So, I restored the two 100k without addictional resistors and now it is ok! :)
I don't understand, but it works.
The strange behavior of the LCD remains.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod