coupled to the secondary winding of said other intermediate. primary winding, coupled to the output circuit ofsaid intermediate frequency am. coupled to the emitter thereof another intermediate frequency transformer having its. collector elements a first intermediate frequency transformer having one end of its secondary winding connected to thebase of said first transistor and its other. In a battery powered superheterodyne radio-receiver an intermediate frequency amplifier stage-including a first transistor 'havingat least base, emitter and. A V g 7 To the accomplishment of the above and related objects, my invention may be embodied in the forms illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that specific change may be made in the specific constructions illustrated and described, so long as the scope of the appended claims is not violated.ģ. gliding Class AĪn exemplary embodiment of this invention which is adapted for use in a pocket sized radio comprises two signal-handling stages, two transistors for these stages respectively, each transistor having base, emitter and collector elements, a biasing network for one stage and comprising a source of bias for the base element thereof, biasing means coupled to the emitter element of said one stage which produces a bias in response to current flow between the respective base and emitter elements, and means conductively interconnecting said bias means to the base element of the other stage whereby bias developed by said bias means is applied to the base element of said other stage. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. H03F1/0261- Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers H03F1/0205- Modifications of amplifiers to raise the efficiency, e.g.gliding Class A stages, use of an auxiliary oscillation
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