Shunt Series Amplifier - Part II — Lesson 6

This lesson covers the shunt series amplifiers and wideband amplifier design. It delves into the method of open circuit time constants to figure out different time constants and parasitic capacitors. The lesson also discusses the concept of noise in circuits, explaining how it is a random process caused by electrons moving around in a material. It further elaborates on how noise can be reduced by decreasing temperature and using lossless elements. For instance, it explains how a resistor can be modeled as a resistor in series with a noise voltage source.

Video Highlights

08:30 - Process of solving simultaneous equations to figure out the current coming in from V
26:02 - Discussion on the process of finding out the current coming in from V in a circuit with feedback
35:24 - Principles of wideband circuits and the process of cascading amplifiers
41:30 - Introduction to the noise
49:02 - Model of a resistor with a noise voltage source

Key Takeaways

- The method of open circuit time constants is used to figure out different time constants and parasitic capacitors.
- Noise in circuits is a random process caused by the movement of electrons in a material.
- Noise can be reduced by decreasing temperature and using lossless elements.
- A resistor can be modeled in series with a noise voltage source.
- Lossy elements contribute to noise, while lossless elements like inductors, capacitors, and mutual inductors are noiseless.