Abstract: A system for recharging storage batteries in an electric motor vehicle includes a stationary unit and a vehicle mounted unit. The stationary unit is provided with a first dielectric case and a high-frequency generator connected to the electric supply mains and to at least one inductor positioned proximate a front wall of the first dielectric case. The vehicle mounted unit includes a second dielectric case positionable adjacent the front wall of the first dielectric case. The second dielectric case is provided with at least one sensor connected to a rectifier which is connected, in turn, to the storage batteries of the vehicle. The at least one sensor is positioned proximate an exterior wall of the second case while both the at least one inductor and sensor are formed from respective flat coils capable of being magnetically coupled through air when positioned adjacent each other.

Abstract: This generator for supplying high-frequency power to an arc lamp (12), coises:a primary circuit (1) connected up to the terminals (5, 6) of the power-supply mains and incorporating an electromagnetic inductor (L', T) connected to a resonant circuit (7);a secondary circuit (2) comprising, in series, the arc lamp (12) and an electromagnetic sensor (E.sub.1, E.sub.2) making it possible to provide magnetic coupling with the primary circuit (1) at high frequency.The secondary circuit (2) is formed by two electrical circuits (10, 11) mounted in parallel with the terminals of the lamp (12), each of the two circuits incorporating an electromagnetic sensor coupled with the electromagnetic inductor of the primary circuit (1).

Abstract: A device for regulating the intensity of an electric current in a receiver has a primary circuit containing a rectifier bridge connected across the terminals of a main power supply, thus defining a positive terminal and a negative terminal on the bridge after rectification. The positive and negative terminals are connected in series to a high-speed on/off switch and a parallel resonant circuit. The parallel resonant circuit includes an inductor and a capacitor connected in parallel. The device also includes a secondary circuit coupled magnetically to the primary circuit. The secondary circuit is connected in series with the receiver whose intensity it is desired to regulate.

Abstract: A cordless electric hair dryer and stand are provided in which the portable hair dryer unit has a rechargeable battery and a thermal heat reservoir. The fan blows ambient air over the thermal reservoir in heat exchange relationship to expel hot air from the dryer when in use. The stand has an electrical circuit inductivley coupled through a coil in the base of the stand to a coil in the rear of the housing of the dryer which provides power to charge the rechargeable battery in the handle of the dryer and to heat the thermal storage medium in the dryer. The heating is accomplished by resistors mounted in heat exchange relationship with the thermal reservoir material. The rechargeable battery is used only to run the fan during drying operation of the portable unit.

Abstract: A portable electric hotplate is heated by an inductive heating power source having a glass ceramic plate and a primary induction coil. The hotplate has an outer heat conductive casing, the top of which forms a hotplate and the base of which is made from a dielectric material. The top surface of the hotplate is heated by an electrical resistor embedded therein adjacent the top surface, which resistor is connector to a secondary inductive circuit mounted adjacent the dielectric base of the hotplate. The hotplate secondary circuit has an induction coil which serves as the secondary for the electromagnetic field emitted by the primary induction coil in the heating power source. The secondary coil is connected in parallel with a capacitor and the two are connected in series to the electrical resistor embedded in the top surface of the hotplate.

Abstract: Induction-heated hob or cookplate has a glass-ceramic transparent top plate, one or more inductor coils below the top plate, and a support plate that has cutout or cutouts in which the inductor coil or coils are situated. The inductor coil or coils is in the form of a spiral or flat winding or a square or rectangular flat winding. A converter receives household power (e.g. 220 v, 60 Hz) and provides an alternating current of suitable frequency (e.g. 25 KHz to 30 KHz) to the inductor coils. Between the support plate and the top plate there is an intermediate complex composed, e.g., of a mica sheet and a glass fabric sheet. Markings or decoration are disposed on the underside of the top plate or on the glass fabric sheet, where they are clearly visible through the transparent top plate, but are not subject to abrasion from cooking utensils or scrubbing.