Improved amplifying circuit

Claim 1

An improved circuit for separately amplifying radio frequency signals and lower frequency signals comprising: a. a transistor having an emitter, a base, and a collector; b. first and second terminals for supplying direct current power; c. a resistor bias circuit connected between said first and second terminals; d. means connecting a selected point on said bias circuit to said transistor base; e. a bias and lower frequency output resistor connected between a point on said bias circuit and said transistor emitter; f. a filter circuit having an input for receiving lower frequency signals for amplification and having an output; g. said filter circuit including means for passing said lower frequency signals and for blocking direct current and said radiofrequency signals; h. means connecting said filter circuit output to said transistor base; i. a capacitor connected to said transistor emitter for supplying radio frequency signals to be amplified, and for deriving amplified lower frequency signals; j. means connected to said transistor collector for deriving amplified radio frequency signals therefrom; k. and means connected between said transistor collector and one of said terminals for supplying direct current power to said transistor.