Principles of ADC (Analog to Digital Conversion): Principles of ADC - The input signal is compared with an internally generated voltage which is increased in steps starting from zero. The…
Working Principle of Multimeter: A multimeter is basically a PMMC meter. To measure dc current the meter acts as an ammeter with a low series resistance. Range changing is accomplished…
AC Voltmeter using Rectifiers: AC Voltmeter using Rectifiers - Rectifier type instruments generally use a PMMC movement along with a rectifier arrangement. Silicon diodes are preferred because of their low…
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…
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…
Classification of Printers: Classification of Printers - Character printers and graphic plotters are the two devices used to prepare a permanent (or hard copy) record of computer output. The basic…
What is Series Compensation in Power System?: Series Compensation - A capacitor in series with a line gives control over the effective reactance between line ends. This effective reactance is…
Single Line to Ground Fault: Figure 11.4 shows a Single Line to Ground Fault at F in a power system through a fault impedance Zf. The phases are so labelled…