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Class Information
Number: 331/143
Name: Oscillators > Relaxation oscillators
Description: Oscillators for generating nonsinusoidal waves which are cyclic in nature and wherein each cycle consists of a period determined by the charging time of a capacitor or inductor followed by a period determined by the discharging time of the capacitor or inductor through a resistive element.










Sub-classes under this class:

Class Number Class Name Patents
331/146 Blocking oscillators 3
331/151 Involving resonant or inductive wave forming circuit or transformer 16
331/152 Multi-grid discharge device in charged capacitor circuit 0
331/144 Multivibrators 52
331/150 Output supplied to another discharge device circuit 14
331/153 With sync, trigger or pulsing circuit 39


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8692625 Precision oscillator with temperature compensation Apr. 8, 2014
8686801 Power supply and DC-DC-conversion Apr. 1, 2014
8669817 Self-calibrating relaxation oscillator based clock cycle Mar. 11, 2014
8669820 Oscillator circuit Mar. 11, 2014
8665029 Oscillator module and reference circuit thereof Mar. 4, 2014
8659362 Relaxation oscillator circuit with reduced sensitivity of oscillation frequency to comparator delay variation Feb. 25, 2014
8643442 Oscillator circuit Feb. 4, 2014
8643443 Comparator and relaxation oscillator employing same Feb. 4, 2014
8618887 Configurable spread spectrum oscillator Dec. 31, 2013
8610509 Flexible low current oscillator for multiphase operations Dec. 17, 2013
8542073 Variable-capacitance device Sep. 24, 2013
8531248 VDD-independent oscillator insensitive to process variation Sep. 10, 2013
8531249 Oscillator for generating output signal with adjustable frequency Sep. 10, 2013
8508306 Relaxation oscillator Aug. 13, 2013
8508307 Oscillation circuit Aug. 13, 2013
8497741 High accuracy RC oscillator Jul. 30, 2013
8456343 Switched capacitor type D/A converter Jun. 4, 2013
8436687 Oscillating apparatus May. 7, 2013
8390384 Precision on-board tuning of embedded microcontroller oscillator using charge time measurement unit Mar. 5, 2013
8378752 Oscillator circuit Feb. 19, 2013
8368475 Oscillator circuit Feb. 5, 2013
8350631 Relaxation oscillator with low power consumption Jan. 8, 2013
8339052 Power supply apparatus and method for AMOLED Dec. 25, 2012
8319567 Two oscillator synchronization system Nov. 27, 2012
8310319 Pulse width modulator with two-way integrator Nov. 13, 2012
8289091 Relaxation oscillator Oct. 16, 2012
8283985 Automatic frequency compensation for pulse width modulated RF level control Oct. 9, 2012
8269567 Flicker noise cancellation in oscillators Sep. 18, 2012
8242852 Oscillator arrangement and method for generating a periodic signal Aug. 14, 2012
8242853 Low headroom oscillator Aug. 14, 2012
8232846 Resistor capacitor (RC) oscillator Jul. 31, 2012
8212624 Reference frequency generation circuit, semiconductor integrated circuit, and electronic device Jul. 3, 2012
8203392 Oscillator stabilized for temperature and power supply variations Jun. 19, 2012
8198947 Oscillator circuit and method for generating a clock signal Jun. 12, 2012
8143961 Technique for detecting crystals Mar. 27, 2012
8106715 Low-power oscillator Jan. 31, 2012
8093955 Applying charge pump to realize frequency jitter for switched mode power controller Jan. 10, 2012
8085099 Self-calibrating relaxation oscillator based clock source Dec. 27, 2011
8085102 Low-power relaxation oscillator Dec. 27, 2011
8076984 Periodic signal generating circuit dependent upon temperature for establishing a temperature independent refresh frequency Dec. 13, 2011
8076981 Self-calibrating oscillator Dec. 13, 2011
8067992 Temperature compensation circuit and method Nov. 29, 2011
8063710 Self-calibrating oscillator Nov. 22, 2011
8054141 Method and circuit for cancelling out comparator-delay in the relaxation oscillator Nov. 8, 2011
8049571 Frequency-jittering apparatuses, frequency-jittering methods and power management devices Nov. 1, 2011
8044735 Oscillator circuit and method for influencing, controlling, or regulating the frequency of an oscillator Oct. 25, 2011
8044740 Temperature compensated RC oscillator for signal conditioning ASIC using source bulk voltage of MOSFET Oct. 25, 2011
8040143 Capacitance sensing with mismatch compensation Oct. 18, 2011
8026770 Relaxation oscillator Sep. 27, 2011
8008978 Oscillator circuit and memory system Aug. 30, 2011

1 2 3 4 5 6 7 8 9










 
 
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