Magnetic field energy responsive position sensing apparatus and method

摘要: The invention concerns magnetic field energy responsive position sensing apparatus and method. A Hall sensor has an element defining a generally planar active face circuitry coupled to said for producing two state electrical output signal in response region of face. ring magnet spaced apart annular end walls that are adjacent north pole south the defines center magnet. mounted relative linear movement direction substantially normal so moves through One wall past while avoiding mechanical contact with This causes change as element. latch is maintaining from subsequent initiation signal.