Exchange voltage meters are an instrument used to measure the size of communication voltage. The principle of measurement is based on the law of electromagnetic sensing, i. E., when a conductor moves in the magnetic field, it produces a sensory electric motion at both ends of the field and releases a certain amount of energy externally. Using this principle, the voltage table places an induction loop inside the conductor, linking it to the circuit to be detected, which is subject to electromagnetic induction and converts it to the voltage values indicated by the pointer when the circuit is out of circulation。
1. Communication voltage table composition
Exchange voltage tables consist of a major compass and a measuring chip consisting of an induction loop. Of these, the compass is used to show the numerical size of the measured voltage, while the sensor coil is used to detect voltage changes in the detected circuit through the induction electromagnetic field。
2. Exchange of principles for voltage meters
The size of the voltage is constantly changing and the direction of the circuit is different. Therefore, we need an instrument that can measure the size and direction of the voltage at the same time. At that point, it's working。
We need to connect it to the detected circuit when we use the interactive voltometer, so that when the circuit passes through the current, a magnetic field can be created in the induction loop, so that we can detect an electrical dynamic. The size of the electric motion is exactly the same as that of the voltage contained in the circuit itself and its direction can be automatically adjusted to keep it consistent with the direction of the voltage in the circuit。
3. What values are measured by the exchange voltage table
Exchange voltage tables measure the size of voltage in communication circuits. Because of the changing size of the exchange voltage, in order to obtain accurate measurements, attention needs to be paid to the location indicated by the pointer during reading. At the same time, when measuring using an exchange voltage table, care needs to be taken to select the appropriate scale and to accurately connect the end of the line。
