MF-47 multimeter circuit

A multimeter, also called a multimeter, has the advantages of multiple uses, multiple ranges, and easy portability. Therefore it is widely used. There are two types of multimeters: one
is the analog pointer multimeter, which is intuitive and clear. The deflection of its pointer maintains a certain corresponding relationship with the measured value. The other is
the digital multimeter , which displays the measured value in digital form (discontinuous, discrete form). Both types of multimeters have their own characteristics. Digital multimeters have
the advantages of accurate readings, high precision, high voltage sensitivity, small current range internal resistance, complete measurement types and functions, and easy use. However, the disadvantage
is that they cannot reflect the continuous change process and change trend of the measured value. The number jumps when the dynamic volume is high, the price is high, and maintenance is difficult. The appearance and circuit
    of the MF-47 analog multimeter are shown in Figure 5-6.     The MF-47 multimeter is a novel designed magnetoelectric rectifier portable multi-quantity multimeter . It can measure DC current, AC and DC voltage, DC resistance, etc. It has 26 basic ranges and 7 additional reference ranges such as level, capacitance, inductance, and transistor DC parameters. It has multiple measurement limits, fine grading, and high sensitivity. It is lightweight, has stable performance, reliable overload protection, clear readings and is easy to use . It is suitable for multimeters widely used in electronic instruments, radio telecommunications, electricians, factories, laboratories, etc.