Abstract: Methods and devices for achieving a desired output in a resonant charge transfer device are given. In an exemplary embodiment a controlled resonant charge transfer device comprises first and second filter sections, first and second switch sections, a charge storage device, and a feedback control system. A method for controlling this device is given, the method comprising specifying a desired output and a desired charge storage voltage ratio; turning on first switches at first switch times and second switches at second switch times; measuring an actual output of the device and one or more parameters of the resonant circuit; determining an actual charge storage voltage ratio; computing corrected first switch times and corrected second switch times; on a subsequent operation cycle of the resonant charge transfer device, turning on the first switches at the corrected first switch times and the second switches at the corrected second switch times.

Abstract: A device for extricating ingrown hairs comprising a housing and a blade member disposed in the housing. The blade member has a proximal portion and a distal portion with the distal portion terminating in a hook member and the proximal portion attached to the housing via an attachment means. The attachment means provides the hook member with an adjustable tension for rotatable hair removal.

Abstract: A device for extricating ingrown hairs comprising a housing and a blade member disposed in the housing. The blade member has a proximal portion and a distal portion with the distal portion terminating in a hook member and the proximal portion attached to the housing via an attachment means.