Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-08-28
2007-08-28
Owens, Douglas W. (Department: 2821)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C315S169100, C323S282000
Reexamination Certificate
active
11054349
ABSTRACT:
A capacitor is connected to the output of a multiphase power converter, and a current-driven device (e.g., LED or laser diode) is also connected to the power converter output. A solid state switch (FET or IGBT) is connected in series with the current-driven device. Means are provided for sensing current through the current-driven device. An error amplifier compares sensed current through the current-driven device with a current level demand signal and controls the output of the power converter. Means are provided for turning the switch on and off and may be (i) a fast comparator receiving a voltage reference signal at one input and the current level demand signal at another input, and outputting the switch on/off signal to the switch or (ii) an externally-generated logic signal provided directly to the switch.
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Model 779A,High Power CW or Pulsed Laser Diode Driver, Analog Modules, Inc., Longwood Florida (www.analogmodules.com).
Crawford Ian D.
Morales Miguel
Analog Modules, Inc
Linden Gerald E.
Owens Douglas W.
Stauffer Dwight A.
Tran Chuc
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