Introduction to the method of measuring voltage with a multimeter
The digital multimeter's measurement process begins by converting the measured value into a DC voltage signal using a conversion circuit, followed by analog/digital (A/D) conversion of the voltage analog quantity into a digital quantity, counting with an electronic counter, and using the digital measurement result that is directly displayed on the display.
The conversion circuit part of the multimeter performs the function of measuring voltage, current, and resistance, while the measurement of current and resistance is dependent on the measurement of voltage, meaning that the digital multimeter is built on the foundation of the digital DC voltmeter.
The analog to digital converter of the digital DC voltmeter transforms the continuously changing analog voltage quantity into a digital quantity, which is then counted by the electronic counter to produce the measurement result and displayed by the decoding display circuit. Under the influence of the clock, the logic control circuit directs the coordinated operation of the circuit and completes the full measurement procedure in sequence.
How to measure voltage with a multimeter
1. The multimeter is our commonly used test tool
It is mostly employed to test variables like voltage, resistance, and current and is very important in the testing, upkeep, and manufacturing of electronic products. An ammeter, a dial, a range selection switch, and test leads make up a multimeter's core parts. Although there are many different multimeter models, the general usage is the same for all of them. Let's discuss how to measure the power supply with a multimeter and how to measure voltage with a multimeter.
Explain in detail how to use a multimeter to measure voltage
2. Method of measuring voltage with multimeter
The range switch is first set to the range of the fifth gear, which is denoted with the letter V, in order to measure voltage using a multimeter. (when testing AC voltage, align it with the gear of AC voltage, and when testing DC voltage, align it with the gear of DC voltage). The ammeter pen needs to be connected to the circuit being tested while measuring the voltage. Choose a suitable range point based on the approximate value of the circuit being tested. Each dry battery can be used up to 1.5V maximum, which falls within the 5V range.At this point, the full scale reading of the hands on the panel, 500, should be scaled down by a factor of 100 to be interpreted as 5, or 5. The needle will read 3V when it reaches the 300 mark. Keep in mind that the full-scale reading of the needle on the meter head corresponds to the value indexed by the range switch's tip. To read the true value while reading the meter, you simply need to convert it appropriately. All range switch ranges, with the exception of the resistance range, can read the measurement data in this manner.When the precise value of the observed voltage cannot be determined during the actual measurement, the switch can be turned to the maximum range first, and then the range can be gradually decreased to an appropriate position. When measuring DC voltage, pay close attention to the positive and negative polarity. The test needles will reverse if the test leads are switched around. If you don't know the circuit's positive and negative polarity, you can rapidly test it on the circuit in question while the multimeter is set to its maximum range, and by watching how the pen needle deflects, you can determine the circuit's positive and negative polarity.
