Electric lamp and discharge devices: systems – Current and/or voltage regulation – Keyboard operated or pattern controlled regulator
Patent
1990-03-30
1991-08-20
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Keyboard operated or pattern controlled regulator
315224, 315293, 315307, 315DIG7, H05B 4136
Patent
active
050417673
ABSTRACT:
A gas discharge tube is controlled in intensity and in the length along such tube that is illuminated by providing digital control signals to an analog drive circuit connected to the high-voltage energization device for the tube. A pulse-width modulated digital control signal containing illumination length and intensity information is converted to ramp-shaped analog drive pulse that control the voltage at a high-voltage transformer secondary to which the gas discharge tube is connected. A manually actuatable keypad permits the user to enter the information that is then converted to the pulse-width modulated signal.
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Arotta Pat
Doroftei Mihail
Green Brian D.
Royko Rastislav N.
Serbin Brent M.
Bertonee Inc.
Eslinger Lewis H.
LaRoche Eugene R.
Maioli Jay H.
Yoo Do Hyun
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