Electrostatic force applied between two electrodes
To introduce the electro mechanical coupling equation, the two electrodes of the electrostatic transducer are considered immobile. The transducer is thus a simple capacitor. This capacitor is connected to a variable voltage source, with an output impedance
and no load voltage
.
The variable voltage from the source creates a variation of the electrical state of the system. This is seen via a change in the quantity of charge stocked on the electrodes. The consequence of this, is a modification of the electrostatic force applied between the two electrodes. Thus the two electrodes are attracted to each other.
