What is voltage measurement?
voltage measurement is performed in many applications using a voltmeter, which is a manual device that measures the difference or the difference between the positive and negative terminals that are placed in contact with the location in the conductive electrical circuit. Because the voltage is defined as this potential difference between two points in the conductive circuit, there are many circuits that also have a built -in voltage capacity. Voltage is Defined as the Electrical Difference Between Two Points in A Circuit That Carries and Current of One Ampere and the Work Energy of One Watt Indicates and Positive Value, That Means That The Voltage Measurement Device is Displaying the True Nature of Current Flow Within the Circuit, From the Positive Lead Through the Voltage Measurement Device to the Negative guidance and back to the perimeter. If the voltmeter indicates the value, that is, the positive and negativeThe lines are reversed and the current actually flows in the opposite direction. No matter how the voltmeter wires are located at points in the circuit, the voltage measurement is only the potential difference, at two points in the circuit and strictly speaks by variable measurements and not one of the actual current current.
current flows from positive to negative potential in the perimeter. Voltmeters refer to this as a positive value on subtraction. It is also true that the real physical flow of electrons in the circuits is in the opposite direction from negative to positive, as a counterweight effect of the current flow. The voltage measurement is often confused with the current flow, but the current flow is actually measured in the amps, while the voltage can be considered a image at the time of the difference in the electrical potential at two points in the Circuit.
As the voltage measurement device works, it also redirects the part of the current in the circuit in the measurement process through the unit. That modifIt IMPENSE The actual perimeter voltage while the voltmeter is connected. Most voltmeters are built so that it has a very low effect on the performance of circuits during such measurements.
Other types of external and built -in circuits that measure voltages include an oscilloscope card and analogue to the digital converter (A/D) on computers. Some devices also measure more than just a voltage, such as the current of the combined voltage or the resistance of the circuit, and these units are referred to as a multimeter. Many modern versions of voltage measurement devices are digital and provide one discrete reading value, and in the case of multimeters it is commonly referred to as digital multimeters (DMMS).
Early forms of voltmeters were built on an analog principle of constant measurement of the value of the voltage and the struggle with a needle that would change up and down as the voltage changes. In this respect, to a certain extent, they resemble an oscilloscope reading that creates a graphical display of continuous voltage measurement in the set time period. ComputerThey use A/D converters to measure voltage and change the measurement to a binary signal they understand. These devices also take the actual input voltage in terms of analog signal and turn it to a digital value that software can analyze on your computer.