J.B. Gupta provides extensive coverage of transistor physics and biasing techniques.

Looking for a reliable intro to semiconductor devices and basic circuits? J.B. Gupta’s "Electronic Devices and Circuits" is a concise textbook used in many undergraduate courses, covering semiconductor physics fundamentals, diode and transistor behavior, biasing, small-signal models, and basic amplifier and Oscillator circuits.

The book transitions from individual components to functional analog subsystems.

Crafting signal conditioning circuits for sensor interfacing.

Also, you can try to find the pdf version of the book on various online libraries and repositories, such as: