When on this page:
https://www.allaboutcircuits.com/textbook/
I clicked on this links:
Chapter 9 - Practical Analog Semiconductor Circuits
And it took me to a discussion of ESD instead of semiconductor circuits.
https://www.allaboutcircuits.com/textbook/
I clicked on this links:
Chapter 9 - Practical Analog Semiconductor Circuits
And it took me to a discussion of ESD instead of semiconductor circuits.