Online DC Voltage Measurement by Using DC-to-DC Converters
In order to measure the terminal voltage of a lead-acid battery online, a DC-to-DC converter – MC34063 is used to convert the D.C. input voltage to the supply voltage of measurement circuit. A three-terminal adjustable regulator of TL431A is used to generate a standard reference voltage for the A/D converter of the Microchip MCU – PIC16F873A. This D.C. voltage meter takes advantage of high accuracy of measurement and high stability.
J. L. Ni and A. D. Zhu, "Online DC Voltage Measurement by Using DC-to-DC Converters", Advanced Materials Research, Vols. 211-212, pp. 97-101, 2011