Check with publishers like Nirali Prakashan or equivalents. Some publishers now sell DRM-protected PDFs at 30–40% of print price via:
R.D. Supekar's "Electronics" (12th standard) is widely used in some Indian secondary curricula and by private tutors. The book covers foundational electronic components, circuits, semiconductor devices, and practical applications important for students preparing for board exams and vocational paths. This paper outlines the book’s content, pedagogical features, and access considerations. Rd Supekar Electronics 12th Pdf Free Download
TechKnowledge Publications might sell an official e-book edition on Amazon Kindle or Google Play Books. This e-book is legally watermarked and usually costs 40-50% less than the physical book. You can read it on your phone via the Kindle app for free after purchase. Search for "Rd Supekar Electronics 12th Kindle Edition." Check with publishers like Nirali Prakashan or equivalents