| 摘要 |
A variable condenser which has multi-charging electrodes includes: a first multi-charging electrode which is equipped with multiple first conductive charging bars, a first power feeding lead which is electrically connected to the multiple first conductive charging bars, and a first power feeding electrode which is electrically connected to the first power feeding lead; a second multi-charging electrode which is equipped with multiple second conductive charging bars which are capacitively connected to face the multiple first conductive charging bars, a second power feeding lead which is electrically connected to the multiple second conductive charging bars, and a second power feeding electrode which is electrically connected to the second power feeding lead; a first member on which the multiple first conductive charging bars are mounted; a second member on which the multiple second conductive charging bars are mounted; and an operation unit which changes capacitance by changing a facing area between the multiple first conductive charging bars and the multiple second conductive charging bars by operating the first member or the second member. The variable condenser which has multi-charging electrodes of the present invention is able to increase the capacity of the condenser by increasing the surface area of electrodes more than electrodes of a simple electrode plate structure because the multiple first conductive charging bars and the multiple second conductive charging bars which have a thin cylindrical bar structure are used as a capacitive coupling electrode. Damage of the variable condenser by a thermal expansion is also prevented by including the multiple first conductive charging bars and the multiple second conductive charging bars by using a carbon fiber core. A weight reduction and a high strength can be also realized in comparison with an existing variable condenser. [Reference numerals] (41) Operation mechanism; (42) Control unit |
