US PATENT SUBCLASS 327 / 287
.~.~.~ Differential amplifier

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
261  DF  .~ Having specific delay in producing output waveform {7}
285  DF  .~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.) {4}
287.~.~.~ Differential amplifier

DEFINITION

Classification: 327/287

Differential amplifier:

(under subclass 285) Subject matter including a circuit which amplifies only the differences between two input voltages or currents and suppresses voltages or currents appearing simultaneously on both inputs.

SEE OR SEARCH THIS CLASS, SUBCLASS:

246+, for variable or adjustable phase shift control using a differential amplifier.

266, for a differential amplifier in an active circuit element or structure to effect output waveform production delay via the rising or falling edge of a pulse signal.

274, for a differential amplifier in an active circuit element or structure to effect output waveform production delay of multiple outputs with a plurality of delay intervals.

280, for a differential amplifier in an active circuit element or structure to effect output waveform production delay of a single output with variable or selectable delay.