Difference between Current transformer and Potential transformer

Current transformer and Potential transformer are the types of instrument transformer. An instrument transformer is a special type of transformer that is used in the measurement of high voltage and high current, not allowing measuring instruments to come in direct contact with high voltage circuits. Potential transformer is also known as voltage transformer. In this … Read more

What is an AC Bridge? | Applications

AC Bridges are those circuits which are used for the measurement of unknown resistances, capacitance, inductance, frequency and mutual inductance. AC bridges operate with only an AC source. These bridges are very convenient and give the accurate result of the measurement. The construction of these bridge is very simple. Figure 1 shows an AC bridge. … Read more

Q-Meter – Working & Applications

Q-meter is an instrument designed for measuring Quality factor (Q) of a coil as well as for the measurement of inductance, capacitance, and resistance of an electric circuit at radio-frequency. Q-meter is also known as RLC meter. What is Quality factor of the coil? The ratio of the inductive reactance to the effective resistance of … Read more

Voltmeter–Ammeter Method for Measuring Medium Resistances

In this article, we’ll learn voltmeter-ammeter method for the measurement of the medium resistances. As the name of the method suggests, we are having ammeter and voltmeter in this method to measure the resistance of the resistor. There are two possible connections while measuring the medium resistances by this method. We’ll discuss both the connections … Read more

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