US PATENT SUBCLASS 327 / 285
.~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.)

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.~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.) {4}
286  DF  .~.~.~> With counter
287  DF  .~.~.~> Differential amplifier
288  DF  .~.~.~> Field-effect transistor
289  DF  .~.~.~> Electron tube

DEFINITION

Classification: 327/285

Having specific active circuit element or structure (e.g., complementary transistors, etc.):

(under subclass 261) Subject matter including a particular circuit element or structure requiring an external power supply other than the main input signal for its operation and

which produces some dynamic function change (e.g., amplification) of the applied input electrical signal basic characteristic.

(1) Note. Examples of active circuit elements are transistors, tunnel diodes, or SCR's.

SEE OR SEARCH THIS CLASS, SUBCLASS:

264, for an active circuit element or structure in output waveform production delay wherein the delay interval is set by the rising or falling of an input pulse.

272, for an active circuit element or structure in output waveform production delay with multiple outputs with a plurality of delay intervals.

268, for a passive circuit element or structure in output waveform production delay wherein the delay interval is set by the rising or falling of an input pulse.

278, for an active circuit element or structure in output waveform production delay with a single output with a variable or selectable delay. 283, for a passive circuit element or structure in output waveform production delay with a single output with a variable or selectable delay.

290, for a passive circuit element or structure in output waveform production delay.