Abstract: An electric automobile driving apparatus installed in an electric automobile for driving the same. The driving force of the electric automobile is generated by a main battery as the rotating force of a motor. The motor is an AC motor and driven by an AC current output from the main battery and converted into a DC voltage by an inverter. Electric appliances installed in the automobile are driven by a DC voltage having a different value which is output from an auxiliary battery. The auxiliary battery is charged with the DC voltage obtained by rectifying the output from a secondary coil which is disposed in close proximity to a primary coil of the motor.

Abstract: The present invention relates to a device for driving an induction motor comprising:a variable converter which converts an alternating current into a direct current;an inverter device which converts a D-C output of said variable converter into an alternating current;an induction motor driven by said inverter device;a speed detector which detects the speed of said induction motor; anda speed controller which amplifies a reference speed signal input to the inverter device and which provides as an output signal therefrom the difference between the reference speed signal and the speed of the induction motor;wherein the output of said speed controller is changed depending upon the running speed of the induction motor.

Abstract: An electronic timepiece comprises a digital display device and electronic circuitry including a printed circuit board containing thereon a pattern of printed conductors connected to drive the digital display device. A cover member is disposed atop the timepiece casing and on a side portion of the cover member are mounted a plurality of depressable key switches, the key switches being mounted at a location overlying and spaced from the pattern of printed conductors. An electro-conductive rubber sheetlike member coacts with the cover member for both sealing in a water proof manner the region between the cover member and the timepiece casing and effecting electrical connection between individual ones of the key switches and the pattern of printed conductors in response to depression or actuation of the key switches.