EL element driving circuit and EL element lighting device using

Details EL element driving circuit and EL element lighting device using EL element driving circuit and EL element lighting device using

1996-12-18

1999-03-23

Kinkead, Arnold

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

345 76, 345 77, 345212, H05B 3702

Patent

active

058864750

ABSTRACT:
In an EL element driving circuit, a fly back pulse generating circuit receives an electric power from a DC power source through a coil and generates fly back pulses by a switching circuit. The electric power of the fly back pulses is supplied to the EL element as a charging electric power and a current which flows from the DC power source to the coil by the switching operation of the switching circuit is controlled by an adjusting circuit which adjusts the ON period of the switching circuit within a period substantially corresponding to a period after the switching circuit is turned ON and until the current maximizes.

REFERENCES:
patent: 5502357 (1996-03-01), Kimball
patent: 5519288 (1996-05-01), Tatsumi et al.

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