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Class Information
Number: 327/4
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific signal discriminating (e.g., comparing, selecting, etc.) without subsequent control > By phase > Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.) > With transducer
Description: Subject matter wherein a device is included that converts energy forms other than electrical into electrical energy.

Patents under this class:

Patent Number Title Of Patent Date Issued
8565275 Multi-wavelength high output laser source assembly with precision output beam Oct. 22, 2013
8368351 Transmission line directional awareness for a charging station Feb. 5, 2013
8305829 Memory power gating circuit for controlling internal voltage of a memory array, system and method for controlling the same Nov. 6, 2012
7716000 Sensor apparatus having sensor element May. 11, 2010
6137287 Physical parameter sensor having a self-testing circuit which recognizes an abnormal sensor state Oct. 24, 2000
5770965 Circuit and method of compensating for non-linearities in a sensor signal Jun. 23, 1998
5559454 Circuit arrangement for signal processing for inductivity using sensor Sep. 24, 1996
5525899 Physical quantity change detection device which detects change by detecting a phase difference between two pulses Jun. 11, 1996
5477142 Variable reluctance sensor interface using a differential input and digital adaptive control Dec. 19, 1995
5350955 Apparatus for position detection and verification thereof using pulse patterns having sequentially unique properties Sep. 27, 1994
5323436 Apparatus of and method for counting a number of revolutions of a servo motor Jun. 21, 1994
5012673 Method and apparatus for detecting a rotation angle May. 7, 1991
4951300 Precision position detection device Aug. 21, 1990
4857841 Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet Aug. 15, 1989
4855683 Digital phase locked loop with bounded jitter Aug. 8, 1989
4820152 Single multi-function handpiece for dental instruments Apr. 11, 1989
4789822 Three-electrode sensor for phase comparison and pulse phase adjusting circuit for use with the sensor Dec. 6, 1988
4678937 Electrical isolation circuit Jul. 7, 1987
4664523 Apparatus for increasing the resolution of a laser gyroscope May. 12, 1987
4634860 Device for determining the position of a moving part and drilling machine including such a device Jan. 6, 1987
4628201 Scanning signal balancing circuit Dec. 9, 1986
4575865 System for determining time duration of angular rotation Mar. 11, 1986
4567333 Electronic tone ringer with distinctive signaling circuitry Jan. 28, 1986
4563593 Transition detector circuit Jan. 7, 1986
4541105 Counting apparatus and method for frequency sampling Sep. 10, 1985
4470008 Capacitance sensor Sep. 4, 1984
4446389 Quadrature tach decoder circuit May. 1, 1984
4442532 Encoder output pulse detection using two stage shift register and clock oscillator Apr. 10, 1984
4436198 Conveyor belt system having a phase shift indicator and adjuster for optimum tuning of a synchronous rip detector circuit Mar. 13, 1984
4432060 Earth center pointing phase locked horizon sensor electronic loop Feb. 14, 1984
4403193 Pulse detection circuit Sep. 6, 1983
4390865 Apparatus for digital position measurements by a cyclic position transducer Jun. 28, 1983
4352032 Apparatus for computing the quotient of two inductances in an automotive control element position sensor Sep. 28, 1982
4331920 Magnetic or magneto-inductive materials tester with improved processing circuit May. 25, 1982
4268900 Device for controlling a plurality of converters May. 19, 1981
4267470 Rotational angle detecting apparatus May. 12, 1981
4157507 Electronic system for detecting direction of motion Jun. 5, 1979
4139301 Distance measuring laser apparatus for delayed time measurements Feb. 13, 1979
4117408 Apparatus for indicating the loading of an electric AC motor Sep. 26, 1978
4019145 Synchro rate generator Apr. 19, 1977
4016432 Variable rate rotary pulse generator Apr. 5, 1977
3984701 Torquemeter circuit Oct. 5, 1976
3970942 Anti-hunting system for valve operator circuit Jul. 20, 1976
3961224 Transient-free isolation monitor Jun. 1, 1976
3942002 Signal combining circuits Mar. 2, 1976

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