A circuit for controlling power to a capacitive load includes a DC power source coupled in series with an inductor and the capacitive load. The inductor provides for resonant charging of the capacitive load from the DC source. A second inductor is used for resonantly discharging the capacitive...http://www.google.com/patents/US5852358?utm_source=gb-gplus-sharePatent US5852358 - Capactive power circuit
