You're looking for a PDF of "Biomedical Instrumentation" by Arumugam. Here's what I found:
by M. Arumugam is a foundational textbook widely utilized by students and professionals in the fields of biomedical engineering, electronics, and clinical instrumentation. The book provides a comprehensive overview of how engineering principles are applied to measure, monitor, and treat biological systems. Why This Textbook is a Key Resource Biomedical Instrumentation By Arumugam Pdf