As I couldn't find a specific review of the PDF download, I'll provide a general review of the book:

"Basic Electronics: Solid State" is a popular textbook written by BL Theraja, a well-known author in the field of electronics. The book covers the fundamental concepts of electronics, focusing on solid-state devices and circuits. It's widely used as a reference book by students, engineers, and electronics enthusiasts.

"Basic Electronics: Solid State" by BL Theraja is a comprehensive textbook that provides a thorough understanding of electronic components, circuits, and devices. The book is well-structured, and the author's writing style is clear and concise. The content is well-supported by diagrams, illustrations, and examples, making it easier for readers to grasp complex concepts.