I think I have a interesting question about design electronic for QCM sensor
As far as I know that QCM circuit is only a oscillator circuit with the frequency output controlled by value of QCM sensor. that's all.
But problem in here is that " How can we calculate the level of voltage we must supply to QCM sensor ? " when we make a QCM circuit with any topology like: Pierce, Miller, Coppits,...
I remember that in a textbook " Crystal Oscillator Circuits", page 6 of Robert J. Matthys, he said that the driver lever for Quartz crystal depend on its frequency. Ex: 10MHz ~ 2.5 - 3V
Does anyone have opinion about this ?
Nhan Ngo Dinh