Many online "free PDF" copies are incomplete scans of the 19th or 20th editions. They often omit the last three chapters on Power Systems and Traction. Always verify the edition number.
Provides a deep dive into semiconductor physics, diodes, transistors (BJT and FET), and operational amplifiers. You can find the textbook through the following resources: ELECTRICAL TECHNOLOGY electrical technology by bl theraja pdf
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First-year engineering courses and foundational network analysis revision. Volume II: AC and DC Machines transistors (BJT and FET)