The Forrest Mims Circuit Scrapbook, Vol 1
Here it is--a collection of Forrest Mims's classic work from the original Popular Electronics magazine! Using commonly available components and remarkable ingenuity, Forrest shows you how to build and experiment with circuits like these:
digital phase-locked loops
frequency-to-voltage and voltage-to-frequency converters
light wave communicators
magnetic field sensors
pseudorandom number generators
and much, much, more!