Abstract: The present invention relates to a capacitive fingerprint sensor, and the capacitive fingerprint sensor includes: a fingerprint sensor electrode for sensing a fingerprint of a human body; a first transistor of which a current or an output voltage is changed according to a voltage change of capacitive coupling formed by fingerprint capacitance formed when a fingerprint contacts the fingerprint sensor electrode and coupling capacitance formed for capacitive coupling; a fifth transistor that resets a gate electrode of the first transistor and applies capacitive coupling to the gate electrode of the first transistor through a coupling pulse; a second transistor of which a current or an output voltage is changed due to a difference in the current flowing through the first transistor and a gate voltage is maintained by a capacitor; a third transistor that resets a gate electrode of the second transistor; and a fourth transistor that controls a current flowing through the second transistor or an output voltage of th

Abstract: The present invention relates to a capacitive fingerprint sensor, and the capacitive fingerprint sensor includes: a fingerprint sensor electrode for sensing a fingerprint of a human body; a first transistor of which a current or an output voltage is changed according to a voltage change of capacitive coupling formed by fingerprint capacitance formed when a fingerprint contacts the fingerprint sensor electrode and coupling capacitance formed for capacitive coupling; a fifth transistor that resets a gate electrode of the first transistor and applies capacitive coupling to the gate electrode of the first transistor through a coupling pulse; a second transistor of which a current or an output voltage is changed due to a difference in the current flowing through the first transistor and a gate voltage is maintained by a capacitor; a third transistor that resets a gate electrode of the second transistor; and a fourth transistor that controls a current flowing through the second transistor or an output voltage of th

Abstract: A sensor system for analysis of forces and motions on a rotating shaft using non-contact magneto-elastic sensors with the ability to measure any one or more of the following parameters of the shaft: (1) torque, (2) rate of change of torque, (3) shaft speed, (4) shaft position, (5) bending moments in the shaft in 2 directions, (6) axial force, (7) shaft power and/or system efficiency. The sensor system generally includes a magneto-elastic sensor patches fixedly applied to the rotating shaft, and a magnetic field pick up surrounding both said shaft and said magneto-elastic material but not in contact therewith, said magnetic field pick up comprising a clam-shell toroidal collar incorporating a combination of a magnetic field sensors.