US PATENT SUBCLASS 323 / 242
.~.~ Including ramp generator or controlled capacitor charging

Current as of: June, 1999
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323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

234  DF  OUTPUT LEVEL RESPONSIVE {6}
237  DF  .~ Phase controlled switching using electronic tube or a three or more terminal semiconductive device {8}
242.~.~ Including ramp generator or controlled capacitor charging {1}
243  DF  .~.~.~> As input to comparator

DEFINITION

Classification: 323/242

Including ramp generator or controlled capacitor charging:

(under subclass 237) Subject matter including circuitry which produces a gradually changing signal which is ultimately proportional to the output of the device.

(1) Note. The changing signal may take the form of a sawtooth with a repeating ramp and return to an initial value. Controlled capacitor charging involves charging a capacitor to some predetermined value at which value a controllable device such as a transistor, unijunction transistor, or programmable unijunction transistor, goes into another state of conduction or exerts a controlling influence on another device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

288, and 326, for other systems including ramp generators or controlled capacitor charging circuits.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

131+, for a miscellaneous ramp or sawtooth waveform generator.