Explain in detail how to use a multimeter to measure voltage?
The measurement process of the digital multimeter converts the measured value into a DC voltage signal by the conversion circuit, and then converts the voltage analog quantity into a digital quantity by the analog/digital (A/D) converter, then counts through the electronic counter, and finally uses the digital measurement result displayed directly on the display.
The function of the multimeter to measure voltage, current and resistance is realized through the conversion circuit part, while the measurement of current and resistance is based on the measurement of voltage, that is to say, the digital multimeter is expanded on the basis of the digital DC voltmeter.
The A/D converter of the digital DC voltmeter converts the analog voltage quantity that changes continuously with time into a digital quantity, and then the digital quantity is counted by the electronic counter to obtain the measurement result, and then the measurement result is displayed by the decoding display circuit. The logic control circuit controls the coordinated work of the circuit, and completes the entire measurement process in sequence under the action of the clock.
How to measure voltage with a multimeter
1. The multimeter is our commonly used test tool
It is mainly used to test parameters such as voltage, resistance, and current, and plays a great role in the testing, maintenance and production of electronic products. The main components of a multimeter are an ammeter, a dial, a range selection switch, and test leads. There are many models of multimeters, but basically the method of use is the same. Let's introduce the method of using a multimeter to measure the power supply and the principle of the multimeter to measure the voltage.
