The multimeter can be used not only to measure the resistance of the object being measured, but also to measure the DC voltage. Even some multimeter can measure the main parameters of the transistor and capacitance of the capacitor. Fully proficient in the use of multimeter is one of the most basic skills of electronic technology. Common Multimeter has a pointer-type multimeter and digital multimeter. The pointer-type multipurpose meter is a multifunctional measuring instrument with a table head as the core part, and the measured value is read by the table head pointer. The measurement value of the digital multimeter is displayed directly in digital form by the LCD screen, which is convenient for reading and some with voice prompting function. Multimeter is a common table head, set voltmeter, Ammeter and ohmmeter in one instrument.
The DC current of the multimeter is a DC voltmeter with multiple ranges. The table head shunt closed type partial pressure resistor can enlarge its voltage range. The DC voltage of the multimeter is a multiple-range DC voltmeter. The voltage range of the table head can be enlarged by the series partial voltage resistor. The different voltage and the corresponding range are different. The Multimeter's head is a magneto-electrical measuring mechanism, it can only through DC, the use of diodes to convert the AC DC, so as to achieve the measurement of alternating current.