Querying the Validity of Small-Signal Amplifier Conception

Abstract:

Signal source output resistance and negative feedback resistance all contribute to restrain transistor non-linearity and improve amplifier linearity. Amplifier sine output voltage and transistor emitting junction non-sine voltage coexist. Transistor emitting junction non-sine voltage is a by-product and doesn’t affect amplifier function. It was proved by experiment and in theory that the input signal magnitude in the basic common-emitter amplifier is not limited with small signal extent condition Ubem≤10mV, and output range is not limited with Ubem≤10mV. It was proved that small signal amplifier conception does not accord with the facts and might be not suitable.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 2774-2779
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.2774
• Online since: January 2012
• Authors: Zeng Min Yuan, Xu Jin Yuan
• Keywords: Bias Temperature Coefficient, Effect Factor, Mall Signal Amplifier, Output Range, β Temperature Coefficient

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