This circuit was found in a Popular Electronics of the 1990s. The sensor is a rotating mechanical system with a propeller-driven magnet to count pulses with a reedswitch.
January 21, 2016 - Mouser Electronics, Inc. is now shipping the highly anticipated Arduino 101from ...
Based on a Linear Technology integrated circuit not currently easy to obtain this circuit converts the d...
This VCO or Voltage Controlled Oscillator was found in a Popular Electronics from 1991 but can be...