US PATENT SUBCLASS 361 / 155
.~.~.~.~ With capacitor charging or discharging through coil

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

139  DF  CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES {7}
143  DF  .~ Systems for magnetizing, demagnetizing, or controlling the magnetic field {5}
152  DF  .~.~ Including particular drive circuit {3}
154  DF  .~.~.~ Including means to establish plural distinct current levels (e.g., high, low) {1}
155.~.~.~.~ With capacitor charging or discharging through coil

DEFINITION

Classification: 361/155

With capacitor charging or discharging through coil:

(under subclass 154) Subject matter wherein the plural current levels are obtained by the charging or discharging of a capacitor through the coil of the electromagnetic device.