What are the differences between a multimeter and an oscilloscope?
There are two types of multimeters: pointer type and digital type; The pointer type has basically been eliminated, and now digital multimeters are mainly used.
A multimeter can be used to measure resistance, AC/DC voltage, AC/DC current, diodes, capacitors, frequency, etc. The multimeter is simple and easy to use. As long as the gear is set to the desired measurement function gear, the measurement can be carried out.
When using a multimeter to measure current, special attention should be paid. To measure current, the multimeter needs to be connected in series to the circuit, and the red probe needs to be inserted into the appropriate range socket. If the current exceeds the range, the fuse of the multimeter will be burned out.
oscilloscope
Oscilloscope and multimeter are different, multimeter can only display the measured values. Oscilloscope can measure signals quickly and continuously, and depict them as curves, which are displayed on the screen.
Oscilloscopes have a wide range of applications. It can convert signals that are not visible to the naked eye into images. We can analyze the changes in various signals and data based on the measured signal waveform.
Oscilloscope has many functions and menus, and requires a certain level of basic knowledge to use.
Multimeters are divided into two types: analog and digital.
The pointer of the analog meter swings flexibly, making it easy to determine changes in the circuit.
The digital meter has fast response speed, intuitive readings, and small parallax.
The multimeter intelligently measures DC signals and low-frequency pure AC signals with high accuracy. For most AC and digital signals, they can only be detected using an oscilloscope. Due to the oscilloscope's ability to display various signal waveforms detected in electronic circuits on the oscilloscope tube, people can accurately determine whether the circuit is normal during equipment maintenance and circuit debugging.
In circuits, especially in weak electronic circuits, electrical signals can be complex, random, and transient. In this case, an oscilloscope can be used to analyze the signal characteristics and estimate its electrical parameters. A multimeter can only measure typical electrical parameters of steady-state electrical signals, which is not convenient for measuring and analyzing complex electrical signal parameters. A multimeter is suitable for measuring both traditional strong current lines and certain parameters in weak current lines. Oscilloscopes are widely used in electronic circuits, and are less suitable for high-voltage circuits.
