Power supply for electroluminescent panel

Details Power supply for electroluminescent panel Power supply for electroluminescent panel

1988-11-16

1989-08-22

Boudreau, Leo H.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151694, 3151692, G09G 310

Patent

active

048599115

ABSTRACT:
A very efficient and compact circuit is provided to power an electroluminescent panel as may be used for back lighting liquid crystal displays in portable computers. The capacitance of the electroluminescent panel is incorporated in a series resonant, self-commutating power oscillator. The power oscillator is powered by a DC-to-DC converter and inherently provides the desired sinusoidal output waveform to the reactive load comprising the capacitance of the electroluminescent panel.

REFERENCES:
patent: 4253097 (1981-02-01), Hochstrate
patent: 4595920 (1986-06-01), Runyan
patent: 4633141 (1986-12-01), Weber
Application Example for Siemens Integrated Circuit, Part No. TDA 4814 (Oct. 1985).
Schematic Diagram for Tektronix Power Supply.

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