A charge control circuit for controlling a micro-electromechanical device having a variable capacitance is disclosed. In one embodiment, a charge storage device is configured to store a charge amount. A switch circuit is configured to control the variable capacitance of the micro-electromechanical device...http://www.google.de/patents/US20040217378?utm_source=gb-gplus-sharePatent US20040217378 - Charge control circuit for a micro-electromechanical device
