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Class Information
Number: 327/140
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Signal converting, shaping, or generating > Generating sawtooth or triangular output > With amplitude control
Description: Subject matter including the maintenance or modification of output signal magnitude.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8629667 Pulse width modulator with an adjustable waveform generator for controlling duty cycle of a pulse width modulated signal Jan. 14, 2014
8618848 Clock generator with comparator error compensation Dec. 31, 2013
8604845 Triangular wave generator and method generating triangular wave thereof Dec. 10, 2013
8294495 Constant slope ramp circuits for sampled-data circuits Oct. 23, 2012
8188772 Waveform generation circuit May. 29, 2012
8115523 Circuit to spread the spectrum of a PWM signal Feb. 14, 2012
7834592 Circuit for generating triangular waveform having relatively short linear rise time and substantially long linear fall time Nov. 16, 2010
7800419 Differential amplitude controlled sawtooth generator Sep. 21, 2010
7746129 Ultra low power servo-controlled single clock ramp generator with amplitude independent to clock frequency Jun. 29, 2010
7741887 Triangular wave generator Jun. 22, 2010
7671642 Amplitude controlled sawtooth generator Mar. 2, 2010
7583113 Sawtooth oscillator having controlled endpoints and methodology therefor Sep. 1, 2009
7557602 Pre-emphasis circuit including slew rate controllable buffer Jul. 7, 2009
7508243 Triangular wave generation circuit Mar. 24, 2009
7362149 Zero crossing detection and correction upon a distorted primary AC power line voltage Apr. 22, 2008
7336110 Differential amplitude controlled sawtooth generator Feb. 26, 2008
7271632 Controlled slope voltage ramp generator Sep. 18, 2007
7251290 Adaptive controller for linearization of transmitter Jul. 31, 2007
6930520 High bandwidth feed-forward oscillator Aug. 16, 2005
6909417 Shift register and image display apparatus using the same Jun. 21, 2005
6819154 Constant deadtime control in a feed forward enabled pulse width modulator controller Nov. 16, 2004
6636092 Digital receive phase lock loop with cumulative phase error correction Oct. 21, 2003
6633193 Method of forming a switching device and structure therefor Oct. 14, 2003
6456127 Adaptive pulse frame rate frequency control for minimization of electro-magnetic contamination in integrated switching amplifier systems Sep. 24, 2002
6339349 Method and circuit for comparator-less generation of ramped voltage having controlled maximum amplitude Jan. 15, 2002
5955903 Folded ramp capacitance circuit with current source and comparator circuit Sep. 21, 1999
5929671 Waveform generator Jul. 27, 1999
5642066 Linear ramp generator having two voltage controlled current sources Jun. 24, 1997
5585752 Fully integrated, ramp generator with relatively long time constant Dec. 17, 1996
5585753 Sawtooth generator and signal interpolating apparatus using the same Dec. 17, 1996
5502410 Circuit for providing a voltage ramp signal Mar. 26, 1996
5502419 Pulse width modulation signal generation and triangular wave signal generator for the same Mar. 26, 1996
5394020 Vertical ramp automatic amplitude control Feb. 28, 1995
5049759 Signal processing system for period-to-voltage conversion Sep. 17, 1991
5015960 Method of generating a voltage with a triangular wave form May. 14, 1991
5013931 Programmable triangle wave generator May. 7, 1991
4990833 Self-adapting vertical scan circuit for raster-scanned cathode ray tube displays Feb. 5, 1991
4978866 Ramp circuit for control loop Dec. 18, 1990
4859872 Synchronizing signal processing circuit Aug. 22, 1989
4851709 Variable frequency, fixed amplitude digital sweep generator Jul. 25, 1989
4728813 Timebase generator with improved linearity and recovery time Mar. 1, 1988
4585951 Precision triangle waveform generator Apr. 29, 1986
4524334 Triangle waveform generator Jun. 18, 1985
4513256 Swept frequency signal generator Apr. 23, 1985
4438466 D.C. Controlled adjustable ramp signal generator and method Mar. 20, 1984
4284906 Constant amplitude variable frequency synchronized linear ramp generator Aug. 18, 1981
4283637 Signal generator Aug. 11, 1981
4220927 Electrical signal converter usable in triangular waveform generation Sep. 2, 1980
4183278 Driver circuit for tone generator Jan. 15, 1980
4181877 Inertia compensated static motor drive Jan. 1, 1980

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