Average Responding Voltmeter and Peak Responding Voltmeter: A simplified version of a circuit used in a typical average responding voltmeter is given in Fig. 4.23. The applied waveform is amplified…
DC Standard Differential Voltmeter: A basic DC Standard Differential Voltmeter can be operated in different modes. The three basic modes of operation are as a dc voltage standard, as a…
Solid State Voltmeter: Solid State Voltmeter - Figure 4.13 shows the circuit of an electronic voltmeter using an IC OpAmp 741C. This is a directly coupled very high gain amplifier.…
Chopper type DC Amplifier Voltmeter (Microvoltmeter): Chopper type DC Amplifier Voltmeter the dc input voltage is converted into an ac voltage, amplified by an ac amplifier and then converted back…
Transistor Voltmeter (TVM): Transistor Voltmeter - Direct coupled amplifiers are economical and hence used widely in general purpose low priced VTVM' s. Figure 4.9 gives a simplified schematic diagram of…
Thermocouple Principle and Types of Thermocouple: Thermocouple Principle consists of a junction of two dissimilar wires, so chosen that a voltage is generated by heating the junction. The output of…
DC Ammeter: DC Ammeter - The PMMC galvanometer constitutes the basic movement of a dc ammeter. Since the coil winding of a basic movement is small and light, it can…
7 Segment Led Display Working Principle: In 7 Segment Led Display, it is usual to employ a single LED for each segment. For conventional 7 Segment Led Display (including the…