Functions of a digital multimeter
Digital multimeter, also known as digital multimeter (Digital Multimeter, DMM for short), digital multimeter or digital multiplexer, has the advantages of wide application, easy portability, convenient reading and low price.
Yi and other advantages. Its main function is to measure voltage, current and resistance in electronic circuits. These three quantities are the three most basic and important parameters in electronic circuits. Whether the circuit works normally can be reflected by the values of voltage, current and resistance. [2] Therefore, in the
In air maintenance, the voltage, current and resistance values of some key points in the circuit are measured by a digital multimeter, and compared with the reference value when the circuit is working normally, the fault location or damaged electronic components can be determined.
In addition to measuring AC and DC voltage, AC and DC current, and resistance, the digital multimeter can also measure the forward voltage of the diode, the magnification of the triode, capacitance, frequency, continuity, temperature, pulse width, duty cycle, relative value, dBV , conductance inductance and some parameters of semiconductors, etc., some multimeters also have a memory function. With the development of science and technology, the display digits of digital multimeters are also increasing.
