What does the multimeter look like in your eyes?
The multimeter has the advantages of multi-purpose, wide range, and convenient use. It is the most commonly used tool in electronic measurement. It can be used to measure resistance, AC-DC voltage and DC voltage. Some multimeters can also measure the main parameters of transistors and the capacitance of capacitors. Mastering the use of multimeters is a basic skill in electronic technology.
Common multimeters include pointer multimeters and digital multimeters. The pointer multimeter is a multi-functional measuring instrument with the meter head as the core component, and the measured value is read by the pointer of the meter head. The measured value of the digital multimeter is directly displayed in digital form by the liquid crystal display, which is easy to read, and some also have a voice prompt function. A multimeter is a meter that combines a voltmeter, an ammeter and an ohmmeter in one head.
The DC current file of the multimeter is a multi-range DC voltmeter. The voltage range can be expanded by connecting the closed-circuit voltage dividing resistor in parallel with the meter head.
The DC voltage file of the multimeter is a multi-range DC voltmeter. Connecting the voltage dividing resistor in series with the meter head can expand its voltage range. Different voltage dividing resistors have different corresponding measuring ranges.
The meter head of the multimeter is a magnetoelectric system measuring mechanism, which can only pass through direct current, and use diodes to change alternating current into direct current, thereby realizing the measurement of alternating current.
On the basis of the current connection method, plus a battery, a resistor and a band switch, an ohmmeter is formed.
