There is a high resistance value inside the sensor, the specific resistance value is not sure, it should be G class, the bridge has not been measured, there is also an IC encapsulated by SOT23, plus piezoelectric ceramic chip directly compose the acceleration sensor of IEPE interface, please help me to analyze, I wonder if my inference is correct?
Set up a simulation circuit, waveform is able to come out, but the current source current range adjustable is very small, the current is too large to small.Circuit parameters are correct, how to adjust the magnification, which god to help analysis again
Renata Torres postato su June 23, 2020
Such interior is of high resistance value and G resistance value, which cannot be measured by electric bridge. IC of SOT23 and piezoelectric ceramic chip directly constitute the acceleration sensor of IEPE interface.
Suherman postato su June 23, 2020
Multiple combinations of constant voltage effects are needed to avoid the current changes of constant current power supply
Abdellatef Bouihat postato su June 23, 2020
Cannot work, AC equivalent can work, DC bias point cannot be established.317 constitutes a constant current source load.
Kelly Goh postato su June 23, 2020
You should have taken out the imported IEPE acceleration sensor
What you won't find on the triode market is high voltage thresholds and linear regions
