Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2007-07-24
2007-07-24
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C250S2140VT
Reexamination Certificate
active
11259702
ABSTRACT:
A night vision system including a power system having a low voltage unit coupled to a high voltage unit. The low voltage unit includes a low voltage controller and a low voltage table correlating pulse widths to step values. The low voltage unit transmits the step value to the high voltage unit in a pulse train having a period corresponding to a frequency. The high voltage unit including an opto-isolator for receiving the step value from the low voltage controller, a high voltage controller accessing a high voltage table correlating step value to pulse width and threshold. The high voltage controller generates control pulses at the frequency in response to the pulse width and the threshold.
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Boucher Craig
Marshall Paul Neil
Cantor & Colburn LLP
ITT Manufacturing Enterprises Inc.
Owens Douglas W.
Vu Jimmy
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