Multimeter, also known as multiplexing meter, multimeter, triple meter, multimeter and so on, is an indispensable measuring instrument for power electronics and other departments. Generally, the main purpose is to measure voltage, current and resistance. Multimeter can be divided into pointer multimeter and digital multimeter according to display mode. It is a multi-function and multi-range measuring instrument. Generally, the multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio electric equality. Some can also measure AC current, capacitance, inductance and some semiconductor parameters (such as beta).
Multimeter is a magnetoelectric instrument with rectifier, which can measure AC, DC current, voltage and resistance and other electrical parameters. For each electrical quantity, there are usually several ranges. It is also called multimeter or multimeter for short. Multimeter is composed of magnetoelectricity galvanometer (head), measuring circuit and selector switch. Various electrical parameters can be easily measured by choosing the switch transformation. The main basis of circuit calculation is Ohm's law of closed circuit. There are many kinds of multimeter, which should be selected according to different requirements.
Multimeter can be used not only to measure the resistance of the measured object, but also to measure the AC and DC voltage. Even some multimeters can measure the main parameters of transistors and capacitors. Fully proficient in the use of multimeter is one of the most basic skills of electronic technology. Common multimeters are pointer multimeter and digital multimeter. The pointer multimeter is a multifunctional measuring instrument with the header as its core component. The measured value is read by the pointer of the header. The measured value of digital multimeter is displayed by LCD directly in digital form. It is easy to read, and some of them have voice prompt function. Multimeter is a common meter head, which integrates voltmeter, ammeter and ohmmeter.
The DC current gear of the multimeter is a multi-range DC voltmeter. The voltage range can be enlarged by parallel closed circuit dividing resistor on the watch head. The DC voltage range of the multimeter is a multi-range DC voltmeter. The voltage range can be enlarged by series voltage dividing resistance of the watch head. Different piezoresistors have different ranges. The head of the multimeter is the measuring mechanism of magnetoelectricity system. It can only measure alternating current by DC and converting alternating current into direct current by diode.
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