Small-Signal Analysis and Frequency Response of Amplifiers (Low Frequency)
18 sections
·
We're sorry, but this course is currently unavailable. It may have expired, be pending
approval,
or still be processing your enrollment. Please check back later or contact your
instructor
or
support for assistance.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Small-signal analysis linearizes the non-linear behavior of transistors for accurate AC analysis.
- Critical amplifier parameters like voltage gain, input resistance, and output resistance can be derived from small-signal models.
- Design processes for amplifiers must take into account specifications including gain, impedance, and the characteristics of transistors.
Key Concepts
- -- SmallSignal Analysis
- A technique used to analyze the behavior of electronic amplifiers for small AC signals by linearizing the non-linear characteristics of transistors around a DC operating point.
- -- Hybridπ Model
- A BJT small-signal model characterized by input resistance, transconductance, and output resistance, commonly used for analyzing small-signal behaviors.
- -- Voltage Gain (A_v)
- The ratio of the AC output voltage to the AC input voltage, determining how much an amplifier can increase the amplitude of a signal.
- -- Input Resistance (R_in)
- The equivalent resistance seen by an input signal at the amplifier's input terminals; it affects the current supplied by the source.
- -- Output Resistance (R_out)
- The equivalent resistance seen at the output terminals of the amplifier; it influences the output voltage observed by the load.
Additional Learning Materials
Supplementary resources to enhance your learning experience.