Alexander Hock

Method and device for charging and discharging a piezoelectric element

Verfahren und Vorrichtung zum Laden und Entladen eines piezoelektrischen Elements

Time- and event-controlled activation system for charging and discharging piezoelectric elements

Charging and discharging piezoelectric element to desired voltage

Charging and discharging piezoelectric element, e.g for fuel injector of IC engine

Method and apparatus for charging and discharging a piezoelectric element

Arrangement for charging and discharging several piezoelectric elements e.g. for fuel injectors in IC engine, has piezoelectric elements divided into groups, each able to be mutually independently charged or discharged

Method for avoiding an unauthorized access to passive access-authorization system of a motor vehicle

Method and apparatus for charging a piezoelectric element

Automobile steering lock operating method only allows activation of steering lock when automobile is at a standstill and drive train is blocked