Daichi Company, Ltd.

Nihon Beam Electronics Company, Ltd.

Other

Toshihiko Suga

Akihiko Kuroiwa

Takaaki Ikeda

Light emitting power supply circuit

In a power supply circuit for operating an electroluminescent (EL) element comprising a DC power supply, an inverter connected across the power supply, and the EL element connected to the inverter, an inductor is inserted between the inverter and the EL element wherein an AC voltage is applied from the inverter through the inductor to the EL element to emit light. Another EL operating circuit includes a DC power supply, an inverter, a transformer, and a bipolar capacitor connected in this order and an AC power output on a secondary winding of the transformer is applied to an EL element to generate light. Both the circuits enables a noticeable luminance increase and power saving.

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Kawasaki, Japan

Toshihiko Suga