1
Geoffrey T Haigh, Baoxing Chen: Non-optical signal isolator. Analog Devices, Iandiorio & Teska, March 29, 2005: US06873065 (181 worldwide citation)

A non-optical isolator having a driver circuit for providing an input signal to one or more first passive components which are coupled across a galvanic isolation barrier to one or more corresponding second passive components, and an output circuit that converts the signal from the second passive co ...


2
Geoffrey T Haigh: Logic isolator with high transient immunity. Analog Devices, Hale and Dorr, September 14, 1999: US05952849 (142 worldwide citation)

A logic isolation circuit with high transient immunity has a link-coupled transformer assembly for providing isolation. An input circuit provides pulses that indicate rising and falling edges, and an output circuit on the isolated side of the barrier converts the signal with pulses back into a digit ...


3
Geoffrey T Haigh, Baoxing Chen: Isolator for transmitting logic signals across an isolation barrier. Analog Devices, Hale & Dorr, July 17, 2001: US06262600 (127 worldwide citation)

A logic isolation circuit has a transmitter circuit for receiving a logic input signal and providing a periodic signal to an isolation barrier, and a receiving circuit for receiving the periodic signal from the isolation barrier and for providing an output signal that indicates the transitions in th ...


4
Geoffrey T Haigh, Baoxing Chen: Isolator for transmitting logic signals across an isolation barrier. Analog Devices, Hale and Dorr, February 25, 2003: US06525566 (77 worldwide citation)

A logic isolation circuit has a transmitter circuit for receiving a logic input signal and providing a periodic signal to an isolation barrier, and a receiving circuit for receiving the periodic signal from the isolation barrier and for providing an output signal that indicates the transitions in th ...


5
Geoffrey T Haigh, Baoxing Chen: Logic isolator. Analog Devices, Iandiorio & Teska, June 7, 2005: US06903578 (63 worldwide citation)

A logic isolation circuit has a transmitter circuit for receiving a logic input signal and providing a periodic signal to an isolation barrier, and a receiving circuit for receiving the periodic signal from the isolation barrier and for providing an output signal that indicates the transitions in th ...


6
Geoffrey T Haigh, Baoxing Chen: Logic isolator for transmitting periodic signals across an isolation barrier. Analog Devices, Wolf Greenfield & Sacks P C, July 26, 2005: US06922080 (59 worldwide citation)

A logic isolation circuit has a transmitter circuit for receiving a logic input signal and providing a periodic signal to an isolation barrier, and a receiving circuit for receiving the periodic signal from the isolation barrier and for providing an output signal that indicates the transitions in th ...


7
Geoffrey T Haigh, Paul R Nickson: Magnetically coupled signal isolator using a faraday shielded MR or GMR receiving element. Analog Devices, Wolf Greenfield & Sacks P C, September 18, 2001: US06291907 (52 worldwide citation)

An isolator having a driver circuit which responsive to an input signal drives appropriate signals into one or more coils which are magnetically coupled to one or more corresponding MR or GMR elements whose resistance is variable in response to the magnetic field applied by the coil(s), and an outpu ...


8
Geoffrey T Haigh, Paul R Nickson: Magnetically coupled signal isolator using a Faraday shielded MR or GMR receiving element. Analog Devices, Wolf Greenfield & Sacks P C, April 25, 2000: US06054780 (51 worldwide citation)

An isolator having a driver circuit which responsive to an input signal drives appropriate signals into one or more coils which are magnetically coupled to one or more corresponding MR or GMR elements whose resistance is variable in response to the magnetic field applied by the coil(s), and an outpu ...


9
Baoxing Chen, Geoffrey T Haigh, Alberto G Comaschi: Ultra-low power magnetically coupled digital isolator using spin valve resistors. Analog Devices, Samuels Gauthier & Stevens, July 11, 2000: US06087882 (46 worldwide citation)

An isolator having a driver circuit which is responsive to an input signal to drive signals into a magnetic-field generator such as at least one coil. The generator is magnetically coupled to a sensor that includes spin-valve resistors which have resistance characteristics that are variable in respo ...


10
Chau C Tran, John A Geen, A Paul Brokaw, Geoffrey T Haigh: Micromachined semiconductor magnetic sensor. Analog Devices, Samuels Gauthier & Stevens, August 14, 2001: US06275034 (34 worldwide citation)

A semiconductor magnetic field sensor including a substrate; a semiconductor moveable element suspended above the substrate, the moveable element being configured to have a current passed therethrough and to deflect perpendicularly with respect to an applied magnetic field; and at least one fixed se ...



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