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Class Information
Number: 324/99R
Name: Electricity: measuring and testing > Measuring, testing, or sensing electricity, per se > Balancing (e.g., known/unknown voltage comparison, bridge, rebalancing) > Automatic
Description:










Sub-classes under this class:

Class Number Class Name Patents
324/99D Digital voltmeters 204
324/100 With recording 12


Patents under this class:

Patent Number Title Of Patent Date Issued
8564277 System for and method of virtual simultaneous sampling with a single ADC core Oct. 22, 2013
7049806 Microelectricalmechanical system with improved beam suspension May. 23, 2006
6803755 Microelectromechanical system (MEMS) with improved beam suspension Oct. 12, 2004
6803776 Current-comparator-based four-terminal resistance bridge for power frequencies Oct. 12, 2004
6504356 Microelectro-mechanical high resolution current sensing apparatus Jan. 7, 2003
6466005 High resolution current sensing apparatus Oct. 15, 2002
6348788 High resolution current sensing apparatus Feb. 19, 2002
5933002 Controlled bending actuator system Aug. 3, 1999
5933003 Magnetoresistive wheatstone bridge with compensating current conductor for measuring an electric current Aug. 3, 1999
5831424 Isolated current sensor Nov. 3, 1998
5565765 Current sensor operating according to the compensation theorem Oct. 15, 1996
5392218 Electrically isolated approach to sensing dc voltages referenced to a floating ground Feb. 21, 1995
5291073 Thermal power sensor Mar. 1, 1994
5153510 High impedance system for measuring voltage Oct. 6, 1992
5144154 Range changing using N and P channel FETS Sep. 1, 1992
5132608 Current measuring method and apparatus therefor Jul. 21, 1992
4967145 Active current transformer Oct. 30, 1990
4947108 Electric current sensing device Aug. 7, 1990
4916570 Voltage comparator circuit for monitoring a process output voltage within a preset range Apr. 10, 1990
4910455 Non-intrusive current measuring circuit Mar. 20, 1990
4823075 Current sensor using hall-effect device with feedback Apr. 18, 1989
4817011 Automated modeling method for tuning transformers Mar. 28, 1989
4814695 Measurement method for an electrical signal, series-parallel negative-feedback measuring circuit, as well as use of the method of the measuring circuit for measuring voltage sources with v Mar. 21, 1989
4771233 Printed curcuit board lead ammeter Sep. 13, 1988
4677666 Adaptive line hybrids Jun. 30, 1987
4639665 Sensing system for measuring a parameter Jan. 27, 1987
4547728 RF Wattmeter Oct. 15, 1985
4510442 Measuring system for exceedingly weak currents Apr. 9, 1985
4460867 Method and circuit for measuring of current Jul. 17, 1984
4407993 Hindered piperidine polymer stabilizers Oct. 4, 1983
4290146 Measuring device for transmitting measuring signals via an optical link Sep. 15, 1981
4245183 RMS Circuit for voltage regulation Jan. 13, 1981
4184827 Apparatus for monitoring and controlling the operation of a dual platen press Jan. 22, 1980
4177423 Bridge circuits Dec. 4, 1979
4157502 Arrangement for determining the effective value and/or the power of electrical signals Jun. 5, 1979
4134062 Limited rotation instrument rebalance apparatus employing a wiper having vibration damping Jan. 9, 1979
4097799 Electrical indicator including relatively translatable scale and index tapes Jun. 27, 1978
4081745 Digital-analog indicating system Mar. 28, 1978
4075559 Technique for extending the range of a signal measuring circuit Feb. 21, 1978
4075558 Method of and system for metering a periodically varying voltage Feb. 21, 1978
4066958 Compensated galvanometer Jan. 3, 1978
4060763 Arrangement for determining the effective value and/or the power of electrical signals Nov. 29, 1977
4041288 Voltage level display circuit Aug. 9, 1977
4015209 Carrier wave compensator with interference suppression circuit means Mar. 29, 1977
3988067 Automatic polarization analyzing device Oct. 26, 1976
3970931 Method of indicating and/or recording electrical quantities and indicating respectively recording apparatus embodying said method Jul. 20, 1976
3942123 Electronic measurement system Mar. 2, 1976
3939388 Self-balancing instrument Feb. 17, 1976
3934196 Servoed indicating apparatus Jan. 20, 1976











 
 
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