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DIGITAL TRANSDUER RESEARCH PROGRAM
NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA ENGINEERING DEVELOPMENT LAB
A seven-bit transducer was designed, fabricated, and evaluated. The results of the evaluation revealed that the magnetic technique is capable of generating seven binary digits, the armature travel for the seven binary digits is approximately 1.40 inches, and the binary zero and the binary one intervals are not uniform. The causes of output signal nonuniformity were investigated. The nonuniformity can be attributed to the misalignment of the matrix rods, the unbalance in the individual sense winding signals at the beginning and end of the matrix, the location of the sense windings on the rods, and the inability to maintain identical sense windings in manual fabrication. Two techniques were established to compensate for matrix output signal nonuniformities. Equations were derived which approximate the output signal from a matrix of series-connected sense windings and from a single sense winding in response to the movement of an armature. Author