Working Principle of Digital Voltmeter
Let us discuss the working of a digital voltmeter. It is important to note that the working of digital voltmeter matches to that of an analog to digital convertor because it basically transforms given input signal into a sequence of pulses . Let us see the working
- The input signal is fed as the input to the pulse generator. The pulse generator generates rectangular pulses of width as that of input signal.
- The output of the pulse generator acts as the input the AND gate whose another input is a sequence of pulses. This creates a positive triggered switch resulting in positive triggered sequence of pulses having width same as the pulses generated by the pulse generator.
- The positive triggered pulses i.e. the output of AND gate is fed to invertor which inverts the output of AND gate.
- The output of invertor is fed as an input to the counter which counts the total pulses and time duration between the pulses.
- The last step involves showing the precise output mainly on LED and the reading is calibrated and shown in Volts.
Now we can see the similarity in working of digital voltmeter to that of an Analog to Digital convertor
Working Principle of Digital Voltmeter
A voltmeter is a significant device used in electronics engineering for measuring potential developed across various devices. Depending on the requirements these voltmeters can be designed into two types that being digital and analog. In this article, we will briefly discuss the two types of voltmeters. Later we will study about digital voltmeter and the working principle behind it. We will also see the block diagram of a digital voltmeter and how it works. The digital voltmeter can further be divided into certain types and we will discuss them too. This description will include talking about their specifications as well. After the discussion, we will talk about the advantages and disadvantages of digital voltmeters which are considered while using digital voltmeters in some real-life appliances. This will conclude the article with some Frequently Asked Questions for user reference.
Table of Content
- Digital Voltmeter
- Working Principle
- Block Diagram
- Types
- Advantages
- Disadvantages
- Applications