Vacuum capacitor capable of changing capacitance

• Main Authors: ZHANG DECAI, HONG JINGWEI
• Format: Patent
• Language: Chinese; English
• Published: 04.03.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

The utility model discloses a vacuum capacitor capable of changing capacitance, which relates to the technical field of electronics and comprises an insulating rod, an upper shell, a lower shell, a fixed electrode, a movable electrode, a magnet, an insulating shell, a voice coil motor coil, a spring and a movable electrode connecting piece, the top end of the insulating rod is connected with the upper shell, and the bottom end of the insulating rod is provided with the lower shell. According to the utility model, the coil of the voice coil motor is electrified, so that the coil of the voice coil motor generates a driving force magnetic field under the action of current, the magnet generates an induced electromotive force, and under the action of the induced electromotive force, the current of the coil of the voice coil motor is different; according to the variable vacuum capacitor, the movable electrode is made to move in the direction perpendicular to the coil current direction of the voice coil motor, so th