STAGE OF AMPLIFIER WITH CONTROLLED AMPLIFICATION, AMPLIFIER WITH CONTROLLED AMPLIFICATION, T V RECEIVER Russian patent published in 1999 - IPC

FIELD: television. SUBSTANCE: stage of amplifier with controlled amplification has two transistors connected by circuit of differential amplifier with coupled emitters. Collectors of transistors are connected to resistive loads. Device with conductance controlled electrically is placed between collector electrodes of transistors and shunts resistive loads of collectors. Mentioned shunting is so controlled that allows amplification of voltage of stage to be changed. Device with conductance of each stage of amplifier controlled electrically is so implemented that makes it feasible for stage with controlled amplification to ensure technical result lying in stabilization of D C operational condition with change of conductance of given device. It is possible to use stage with controlled amplification in the capacity of input or output stages in amplifier with controlled amplification or use it as frequency amplifier in T V receiver. EFFECT: stabilization of D C operational condition with change of conductance. 14 cl, 8 dwg