219288 ⎘
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Single-ended push-pull amplifiers ; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with asymmetrical driving of the end stage using Darlington transistors
Controlling a power amplification stage of an audio signal amplifier
#2Controlling a power amplification stage of an audio signal amplifier
#3Low cost high performance power amplifier utilizing two-stage-included local negative feedback with feedback-shifting technology
#4Method for double sampling loop negative feedback and double sampling negative feedback amplifier