I have typical load cells and want to connect them in parallel directly to the HX711 "A" section of the amplifier.
The load cells have an input resistance of 400 Ω and an output resistance of 350 Ω each.
I have a few questions to solve:
- What exactly is the analog supply regulator in HX711, and how does it work?
- Are it the halved resistors in the Wheatstone bridge that create that problem? If so, according to Ohms law, the current flowing through the resistors should increase about two times, right? Is that why parallel loadcells don't work?
- If my problem connects to the analog supply regulator, how do I manage it? By replacing the PNP transistor (s8550 appeared in the second pic) used in HX711 or by enlarging the current out of the analog supply regulator by the number of load cells linked in parallel times?