US PATENT SUBCLASS 315 / 311
.~.~ Variable impedance-type regulator

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

291  DF  CURRENT AND/OR VOLTAGE REGULATION {7}
307  DF  .~ Automatic regulation {4}
311.~.~ Variable impedance-type regulator

DEFINITION

Classification: 315/311

(under subclass 307) Systems wherein the regulating means is a device designed to have its impedance varied automatically in response to some condition.

SEE OR SEARCH CLASS

323, Electricity: Power Supply, or Regulation Systems,

234, 303, for systems having an automatically controlled impedance for controlling the magnitude of the current and/or voltage in a single circuit.