- May 26, 2009
Uh, i hope i have NOT contributed to start a war, with my posts, cause that was NOt my intention at all .....
Was that really necessary?To answer your snotty questions as you posed them I'll
go through them as indicated by color above...
sorry for late reply to much work no time to playGreat.
Post some Pictures if you can.
would not using a diode on the ground fix the problem ??Some millivoltmeter modules don't allow the negative input pin connected to the ground pin of the power supply of the module itself, it's a limitation of the reading IC and cannot be worked around (and, trust me, i've tried almost anything, about it ) ..... the only working solution is to use a little DC-DC converter for power up the head circuit, so the two grounds are galvanically insulated.
Not at all, sorry ..... i've tried diodes, resistors, resistors network for get a "virtual ground", and so on ..... it just go offscale with nothing connected to input if the difference is low enough for let you read, and don't read at all if the difference is big enough for not drive the reading offscale .....would not using a diode on the ground fix the problem ??
or is that not worth me trying