US PATENT SUBCLASS 361 / 152
.~.~ Including particular drive circuit

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.~.~ Including particular drive circuit {3}
153  DF  .~.~.~> Pulse initiated
154  DF  .~.~.~> Including means to establish plural distinct current levels (e.g., high, low) {1}
156  DF  .~.~.~> With capacitor charging or discharging through coil

DEFINITION

Classification: 361/152

Including particular drive circuit:

(under subclass 143) Subject matter including a drive circuit specifically designed to meet the required operating parameters of an electromagnetic device.

(1) Note. The drive circuits included satisfy such operating parameters as providing plural distinct operating currents or providing pulses to the device to operate it in a specific manner.