(under subclass 185) Subject matter in which the input circuit includes a transformer which couples the signal energy from the signal source to the amplifier device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120, for interstage coupling between push-pull stages which may involve transformer coupling.
122, for input coupling for push-pull amplifiers which may involve transformer coupling.
154, for transformer coupling which may be involved in a cascaded amplifier with different interstage couplings.
165+, involving interstage transformer coupling.
195+, for output transformer coupling. SEE OR SEARCH CLASS
333, Wave Transmission Lines and Networks,
177+, for passive wave transmission transformer coupling circuits generally.
