Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1989-09-12
1991-06-25
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
315246, 315219, 3151693, H05B 3700
Patent
active
050270400
ABSTRACT:
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.
REFERENCES:
patent: 3749977 (1973-07-01), Sliker
patent: 4253097 (1921-02-01), Hochstrate
patent: 4254362 (1981-03-01), Tulleners
patent: 4319164 (1982-03-01), Tulleners
patent: 4346332 (1982-08-01), Walden
patent: 4611150 (1986-09-01), Ball
patent: 4633141 (1986-12-01), Weber
patent: 4749914 (1988-06-01), Feher
patent: 4845489 (1989-07-01), Hormel
Electronic Letters, vol. 24, No. 7, Mar. 31, 1988, Stevenage, Herts, GB, pp. 439-440; D. C. Hamill: "Phase-Locked Induction Heating Inverter Employing Power MOSFETs", *FIG. 1*.
Ikeda Takaaki
Kuroiwa Akihiko
Suga Toshihiko
Daichi Company, Ltd.
LaRoche Eugene R.
Nihon Beam Electronics Company, Ltd.
Zarabian A.
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