US PATENT SUBCLASS 318 / 677
.~.~ With particular servoamplifier

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
671  DF  .~ With particular motor control system responsive to the "actuating signal" {10}
677.~.~ With particular servoamplifier {5}
678  DF  .~.~.~> Differential amplifier
679  DF  .~.~.~> Diverse types of amplifiers in different stage
680  DF  .~.~.~> Magnetic servoamplifiers
681  DF  .~.~.~> Solid-state servoamplifiers
682  DF  .~.~.~> Rotating amplifier (e.g., "Ward Leonard" control)

DEFINITION

Classification: 318/677

(under subclass 671) Subject matter in which the particular

motor control system includes a particular servoamplifier.

SEE OR SEARCH CLASS

330, Amplifiers,

1+, for amplifiers, per se.