What is a Digital Instrument?

What is a Digital Instrument?: Digital instrument are rapidly replacing their analog counterparts. The parameters of interest in a laboratory environment are (i) voltage (ii) current (iii) power (iv) frequency,…

Continue Reading What is a Digital Instrument?

Microprocessor Based Ramp Type DVM

Microprocessor Based Ramp Type DVM: A basic block diagram of a Microprocessor Based Ramp Type DVM and its operating waveform is shown in Fig. 5.17 (a) and (b) respectively. Depending…

Continue Reading Microprocessor Based Ramp Type DVM

Electrodynamometer Instrument

Electrodynamometer Instrument: Electrodynamometer Instrument - The D'Arsonval movement responds to the average or dc value of the current flowing through the coil. If ac current is sought to be measured,…

Continue Reading Electrodynamometer Instrument

Practical PMMC Movement

Practical PMMC Movement: The basic Practical PMMC Movement (also called a D'Arsonval movement) offers the largest magnet in a given space, in the form of a horse-shoe, and is used…

Continue Reading Practical PMMC Movement

Different Types of Ammeters and Voltmeters

Different Types of Ammeters and Voltmeters: The following are the different types of ammeters and voltmeters in measuring instruments are PMMC Moving Iron Electrodynamometer Hot wire Thermocouple Induction type Electrostatic…

Continue Reading Different Types of Ammeters and Voltmeters