Overview of the structure of the multimeter
A multimeter consists of three main parts: the meter head, measuring circuit, and conversion switch. A multimeter is the most basic tool in the field of electronic testing and a widely used testing instrument. A multimeter, also known as a multimeter, a multimeter (A, V, Ω, also known as current, voltage, and resistance), a multimeter, a multimeter, and a multimeter. A multimeter is divided into pointer multimeters and digital multimeters. There is also an oscilloscope function oscilloscope multimeter, which is a multifunctional and multi range measuring instrument. A general multimeter can measure DC current, DC voltage, AC voltage, resistance, and audio level. Some can also measure AC current, capacitance, inductance, temperature, and some parameters of semiconductors (diodes, transistors). Digital multimeters have become mainstream and have replaced analog instruments. Compared with analog instruments, digital instruments have high sensitivity, accuracy, clear display, strong overload capacity, are easy to carry, and are more convenient and simple to use.
A pointer multimeter generally has 4 to 5 scales, including resistance scale, voltage scale, current scale, decibel scale. In addition, there is a dedicated scale for AC 1OV, which reads directly in the 1OV range. The voltage range is further divided into AC and DC scales, and some meters also have AC current ranges. For example, the DC voltage range (MF-10 type meter) has 1V2.5V10 ∨ 50 ∨ 100V250V500V, and the DC voltage range scale has numbers from O to 5O. When the equivalent range switch is set to 50V, it reads directly. When the range switch is set to 1V, the indicated value is multiplied by 0.02 as the actual value, and when it is 10V, it is multiplied by 0.2100V. When multiplied by 2, the full scale is 1V, 10V, and 100V. When the equivalent range switch is set to 2.5V and 250, the actual values are obtained by multiplying the indicated values by 0.05 and 5, respectively. Set the equivalent range switch to 500 and multiply by 10. The same applies to the AC voltage range.
