Method and apparatus for accommodating multiple dimming strategi

Details Method and apparatus for accommodating multiple dimming strategi Method and apparatus for accommodating multiple dimming strategi

1996-07-22

2000-07-18

Pascal, Robert J.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

326104, 315307, 315208, H03K 522

Patent

active

060912014

ABSTRACT:
An input circuit for a dimming circuit control unit having a single input signal protocol includes a first input line to receive a first input voltage signal and a second input line to receive a second input voltage signal. A first voltage divider is electrically connected to the first input line to receive the first input voltage signal and to divide the first voltage of the first input voltage signal. A second voltage divider is electrically connected to the second input line to receive the second input voltage signal and to divide a second voltage of the second input voltage signal. An inverter is connected to the first voltage divider to invert the first input voltage signal. An analog to digital converter is electrically connected to the first voltage divider to convert the first voltage when the first input signal is analog such that the dimming circuit control unit always receives a digital signal having the single input protocol.

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Weissman Computer Software a Patentable Subject Matter Contrasting United States, Japanese and European Laws AIPLA Quarterly vol. 23, #3 pp 525, 1995.

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