Patents-Review.com
ClassID:

171454 ⎘

G01R19/0015 - CPC Classification

Classification description:

Arrangements for measuring currents or voltages or for indicating presence or sign thereof; Frequency selective voltage or current level measuring separating AC and DC

Recent Application in this class:
#1
20230266369
2023-08-24

SYSTEMS, DEVICES, AND METHODS FOR MEASURING DIRECT CURRENT/LOW FREQUENCY SIGNAL COMPONENTS

 #2
20230194584
2023-06-22

Processing sinewave signals of variable frequency in a device with fixed processing rates

 #3
20220236305
2022-07-28

Method for determining asymmetric vibrations in an electric device

 #4
20220221493
2022-07-14

Detection of a direct current component in an inductive device

 #5
20210088562
2021-03-25

METHOD, APPARATUS AND DEVICE FOR DETECTING ABNORMALITY OF ELECTRIC SIGNAL

 #6
20210044116
2021-02-11

Waveform separator apparatus and method for detecting leakage current in high voltage direct current power systems

 #7
20200132731
2020-04-30

Systems, devices, and methods for measuring direct current/low frequency signal components

 #8
20200099334
2020-03-26

Method for detecting a contact fault in a photovoltaic system

 #9
20190212373
2019-07-11

Device and method for measuring electrical current in an electrical conductor

 #10
20190187186
2019-06-20

Measurement of current within a conductor

 #11
20190020429
2019-01-17

Methods and apparatus to detect a blank frame in a digital video broadcast signal

 #12
20180348284
2018-12-06

Motor drive apparatus to detect inverter with large leakage current

 #13
20180159331
2018-06-07

Waveform separator apparatus and method for detecting leakage current in high voltage direct current power systems

 #14
20180074098
2018-03-15

Current detecting apparatus

 #15
20170317483
2017-11-02

Trip control circuit for circuit breaker

 #16
20160146857
2016-05-26

Apparatus for detecting AC components in a DC circuit and use of the apparatus

 #17
20160116524
2016-04-28

Method and apparatus for electric arc detection

 #18
20150270823
2015-09-24

Configurable bias tee

 #19
20150268303
2015-09-24

Method and device for measuring a current flowing through a switch

 #20
20140306691
2014-10-16

Circuit that deciphers between AC and DC input signals

 #21
20140203796
2014-07-24

NANOELECTROMECHANICAL RESONATORS

 #22
20130027021
2013-01-31

CURRENT SENSOR

 #23
20110292291
2011-12-01

METHODS AND APPARATUS TO DETECT A BLANK FRAME IN A DIGITAL VIDEO BROADCAST SIGNAL

 #24
20110276300
2011-11-10

VOLTAGE MEASUREMENT INSTRUMENT AND METHOD HAVING IMPROVED AUTOMATIC MODE OPERATION

 #25
20110068770
2011-03-24

Method for determining the offset of a periodic signal

 #26
20100072981
2010-03-25

Voltage measurement instrument and method having improved automatic mode operation

 #27
20090299666
2009-12-03

Fourier transform-based phasor estimation method and apparatus capable of eliminating influence of exponentially decaying DC offsets

 #28
20080129279
2008-06-05

Voltage measurement instrument and method having improved automatic mode operation

 #29
20080084201
2008-04-10

Method and apparatus for AC integrated current sensor

 #30
20080084200
2008-04-10

Method and apparatus for DC integrated current sensor

 #31
20070083883
2007-04-12

Methods and apparatus to detect a blank frame in a digital video broadcast signal