Abstract: An alignment system with a variable reactance element is provided for detection of the angular alignment of two variably positionable members. The variable reactance elements form two oppositely varying impedances. A preferred embodiment of the variable reactance element consists of a pair of inductive coils mounted on a core element which forms a flux path for each coil. The core has an integral, deflectable central member which forms a common flux path for both coils. Air gaps within the flux path of each coil are located on either side of a central member of the core. Another variable reactance consists of a first inductive coil having a fixed core element forming a partial flux path for the inductive coil and a movable core element positionable relative to the fixed core element with air gaps between the core elements. A second inductive coil having a similar associated core element from the first coil element.

Abstract: An alignment system with a variable reactance element is provided for detection of the angular alignment of two variably positionable members. The variable reactance elements form two oppositely varying impedances. A preferred embodiment of the variable reactance element consists of a pair of inductive coils mounted on a core element which forms a flux path for each coil. The core has an integral, deflectable central member which forms a common flux path for both coils. Air gaps within the flux path of each coil are located on either side of the central member of the core. Another variable reactance consists of a first inductive coil having a fixed core element forming a partial flux path for the inductive coil and a movable core element positionable relative to the fixed core element with air gaps between the core elements. A second inductive coil having a similar associated core element is placed opposite the movable core element from the first coil element.