(under subclass 364) Subject matter wherein the impedance are connected in a bridge configuration.
SEE OR SEARCH CLASS
236, Automatic Temperature and Humidity Regulation,
69, 74, 78, and 91 for temperature regulating systems which include impedance bridge networks as the control means.
318, Electricity: Motive Power Systems,
663, and 674 for electric motor position servomechanisms which may include an impedance bridge network; subclass 294 for motor reversing systems wherein the armature current reversal means includes an impedance bridge network; and subclass 535 for motor field circuit control systems which include an impedance bridge network.
322, Electricity: Single Generator Systems,
77, for single generator systems where the generator field circuit is controlled by means of an impedance bridge network. 324, Electricity: Measuring and Testing, appropriate subclasses, especially
98, 101, and 600+ for electric testing systems involving impedance bridge arrangements.
330, Amplifiers,
72, 146, and 175 for amplifier systems including, respectively, series arranged tubes with each tube in the arm of a bridge; a bridge with a tube in at least one arm; and a Wheatstone bridge network in a coupling circuit.
331, Oscillators,
110, and 138 for bridge type oscillators wherein the frequency determining element of the oscillator comprises a balanced lattice or similar type network having two pairs of conjugately related terminals.
332, Modulators,
172, for a an amplitude modulator including bridge arrangements.
333, Wave Transmission Lines and Networks,
1, for hybrid type networks which may include Wheatstone bridge impedance arrangements.
340, Communications: Electrical, 510, 563, and 599 for condition responsive systems using a Wheatstone bridge.
363, Electric Power Conversion Systems,
17, 58, 68, 98, 132, and 136 for converters including bridges.
