AN795 Voltage to Frequency / Frequency to Voltage Converter

AN795 Voltage to Frequency / Frequency to Voltage Converter

www.DataSheet4U.com AN795 Voltage-to-Frequency/Frequency-to-Voltage Converter Author: Michael O. Paiva, Microchip Technology, Inc. RATIOMETRIC MEASUREMENT (ANALOG DIVISION) One of the most difficult circuits to build is one which will divide one analog signal by another. Two voltage-to-frequency (.

Features

on of the speed. Analog Display Speed Sensor TC9400 F/V RPM DVM Display (Optical or Magnetic) RPM FIGURE 2: RPM/speed indicator. © 2002 Microchip Technology, Inc. DS00795A-page 1 www.DataSheet4U.com AN795 MOTOR SPEED CONTROL The motor's speed is measured with the F/V converter, which converts RPM into a proportional voltage. This voltage is used in a negative feedback system to maintain the motor at the controlled setting. V+ Speed Set Motor
  – Op Amp + TC9400 F/V FIGURE 3: Motor speed control. Pulse Type Tachometer (Optical or Magnetic) PROPORTIONAL FLOW-RATE CONTROLLER A TC9400 .