(under the class definition) Subject matter including in the signal path a circuit electrically unbalanced to ground, or a convenient electrical reference potential plane, from a single source of electrical signal and having at some subsequent location of the signal path, with or without one or more intervening amplifying devices, a balanced circuit wherein at least two of the conductors have at any instant electrical signal flowing therethrough substantially equal
and opposite in sign with reference to ground or some other convenient reference plane.
(1) Note. Balanced circuits are treated as single sources of electrical signal or as single loads in this class.
(2) Note. Phase splitters are classified in this subclass. Phase inverter amplifier circuits are classified in this subclass and subclass 116 above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
116, for amplifiers having balanced-to-unbalanced coupling.
118, for amplifiers having a push-pull stage. See the notes and search notes thereunder. 301, for semiconductor amplifiers having unbalanced to balanced circuits.
SEE OR SEARCH CLASS
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
594, for miscellaneous circuits with particular coupling or decoupling means.
329, Demodulators, appropriate subclasses for demodulators with unbalanced to balanced coupling.
333, Wave Transmission Lines and Networks,
4+, and 25+ for unbalanced-to-balanced passive circuits. See the search notes under the subclasses 4 and 25.
