METHOD FOR POLARISING AN ELECTROMECHANICAL MICROCIRCUIT AT A CONSTANT ELECTRICAL CHARGE VALUE

摘要

The invention relates to a method and a circuit for polarising an electromechanical microcircuit, such as an electrostatic transducer, at a constant electrical charge. An essentially constant polarisation voltage is applied (A) to a non-operating electromechanical microcircuit for a certain duration (Ti), in order to charge the residual electrical capacity of the microcircuit at a constant electrical charge value (qi), i.e. the initialisation charge, and the microcircuit is disconnected (B) from the polarisation voltage in order to maintain the initialisation charge at the constant value (qi), independently of the variation of the value of the residual electrical capacity during the operation of the microcircuit. The invention can be applied to microcircuits such as electrostatic transducers and adjustable pass-band filters.