(under subclass 75) Subject matter wherein a rectifier or unidirectionally conductive element is used as an excitation circuit impedance.
(1) Note. This subclass is not concerned with the use of a rectifier in the excitation circuit to convert alternating to direct current. Such an arrangement is found throughout subclasses 59 to 88 depending on the significant control arrangement of the excitation circuit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59+, see note 1 above.
78+, for generator excitation control systems under subclass 59 having a plurality of impedances.
SEE OR SEARCH CLASS 257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses for active solid-state devices which may be used as rectifying elements.
323, Electricity: Power Supply or Regulation Systems,
364, for circuits using rectifiers as impedance elements.
