Design and development of digital voltmeter using different techniques

Electrical measurement of quantities plays a crucial role in the real world. Measuring voltage is one of the main tasks for developing large number of applications. This paper is focused on design and development of digital voltmeter using different techniques. It has been shown how to develop a Digital Voltmeter (DVM) from simplest type to professional digital voltmeter. Different types of techniques are adopted for making a voltmeter and the result is compared for testing the accuracy. The simulation of all techniques is done on Proteus ISIS 7.10 and implemented on the hardware. The techniques used for developing the digital voltmeter is comparator based DVM, 8051 based DVM and PIC based DVM. The accuracy of DVMs is shown by simulation in Proteus ISIS and through hardware implementation.