Method and circuit for gating plural triacs

Method and circuit for maintaining charge in a backup battery

Method and circuit for using polarized device in ac...

Method and compensating device for compensating current...

Method and control arrangement for dc transmission, and a...

Method and control device for a bank of batteries

Method and device for batteries

Method and device for charging lead accumulators

Method and device for charging several electrochemical cells

Method and device for continuous adjustment and regulation...

Method and device for controlling a high-voltage d-c (hvdc)...

Method and device for controlling the exchange of energy...

Method and device for evaluating an electrical installation...

Method and device for feeding power to wrist device

Method and device for improving the current quality of an...

Method and device for improving the voltage quality of a...

Method and device for inductive transmission of electric...

Method and device for monitoring battery cells of a battery...

Method and device for monitoring enablement of an electrical...

Method and device for monotoring the load of a battery