Reading an article about the first transistorized Hi-Fi amplifier, [Netzener] got the itch to make one. But what to use for the starting point? Enter an old Radio Shack P-Box stereo amplifier kit.

Abstract: This article presents a compact 13-bit 2-MS/s successive approximation register (SAR) analog-to-digital converter (ADC) designed to enhance energy efficiency under various comparator input ...