Abstract: A ceramic capacitor having an extremely thin plate (as little as 10 .mu.m) with a pair of electrodes on both the surfaces of the plate, said thin plate is supported by the thick dielectric plate which is laminated with said thin plate. The thick plate has a through hole, in the vertical direction of the same, and said through hole is filled with a through hole conductor which connects electrically the external terminal on the outer surface of the thick plate and the inner electrode on the thin plate. The material of the thick plate is the same as that of the thin plate, and a pair of lead lines are soldered to the external terminal and the outer electrode on the thin plate.

Abstract: A variable leakage transformer or a variable voltage transformer comprising a magnetic core with a main magnetic path and a sub-magnetic path, the main magnetic path having at least a common magnetic path with the sub-magnetic path, a primary winding wound on said common magnetic path of the core, a secondary winding wound on said main magnetic path of the core, and means for controlling the magnetic flux in said sub-magnetic path. By controlling the magnetic flux in the sub-magnetic path, the leakage of the flux induced by the primary winding from the main magnetic path to the sub-magnetic path can be controlled, thus the coupling between the primary and secondary windings, and conduction period in each cycle of the AC output voltage are controlled. The control of the conduction period in each cycle provides the control of the power transmitted from the primary winding to the secondary winding.

Abstract: The tape cassette comprises a guide rib extending upward from a lower casing to form a supporting surface for the entire width of the magnetic tape and a guide rib extending downward from an upper casing along the rear surface of the guide rib of the lower casing to provide a support for the guide rib of the lower casing.