Electrical device for the study of the corresponding variations of parameters relating to each other by a system of mathematical relationships forming a table with a double input

摘要

600,795. Electric control systems. BARBEY, R. A. M. Aug. 22, 1945, No. 21510. Convention date, Sept. 18, 1944. [Class 40 (i)] [Also in Group XIX] Electrical calculating apparatus for correlating the quantities in a table connected by a mathematical relationship comprises electrical conductors each having a current measuring instrument and connections between the conductors including impedances. The resistances C11, C12, C13 &c. represent inversely the quantities Q11, Q12, Q13 &c., Fig. 1 and the ammeter M1 indicates the sum of the quantities Q11, Q12, Q13, the ammeter N1 the sum of Q11, Q12, Q31. The ammeter P1 indicates the difference of the sums registered on M1 and N1. Current is supplied at uniform potential by A.C. or D.C. sources S1, S2, S3. The Specification as open to inspection under Sect. 91 also contained the following matter. The resistances C may be replaced by transformer windings. This subject-matter does not appear in the Specification as accepted.