Graham is an experienced electronics engineer and writer based in Cape Town, South Africa, with over 40 years of experience in electronics design, primarily in R&D labs. He holds a National Diploma in Engineering from the University of Johannesburg and a Computer Science diploma from UNISA. Graham has authored over 45 articles for Circuit Basics, covering topics such as voltage regulator circuits, transistor amplifiers, and AM radios. Beyond his engineering pursuits, he is a passionate bass guitarist, performing in multiple bands. Graham continues to share his knowledge through his website at www.versatronics.co.za. He can be reached at graham@versatronics.co.za.