Abstract: A compression trimmer for providing a range of capacitance values for an electrical circuit includes a plurality of capacitive plates spaced by one or more dielectric members and mounted on a substantially compliant, high temperature, molded plastic insulating base. The compression trimmer includes an elongated screw received within and threadedly engaging an elongated torque control hole of the compliant base. The length and diameter of the torque control hole may be ajdusted to provide a desired torque rating of the screw. Additionally, the improved interference fit between the screw and the compliant base reduces or eliminates screw vibration to thereby maintain the capacitance value of the trimmer constant. A plurality of conductive terminals extending through the compliant base are provided for connecting the trimmer in an electrical circuit, for example, by the soldering of the conductive terminals to a printed circuit board.

Abstract: A capacitor having an elongated, generally tubular shape includes a metal clad dielectric sheet formed into an elongated, generally tubularly shaped core that is mounted between two conductive terminals and receives an elongated conductive member electrically connected to one of the conductive terminals. The axial position of the elongated conductive member within the core is variable to vary the capacitance of the capacitor.