How to use a beginner's multimeterWhen using a beginner's multimeter, you first need to understand its basic structure and functions. A multimeter is an electronic measuring tool used to measure current, voltage, and resistance. It usually consists of a digital display, a selection knob, a connection jack, and a measurement lead.
The first step in using a multimeter is to select the correct measuring range. Depending on the amount of electricity to be measured, the corresponding voltage or current level can be selected by the knob. Failure to select the gear accurately can result in inaccurate measurements or even damage to the multimeter.
Next, the measurement leads need to be connected correctly. Depending on the circuit to be tested, plug in the corresponding connection jack. In general, the red leads are plugged into the positive jack and the black leads are plugged into the negative jack. Remember to plug in the correct jack, otherwise it will also affect the measurement results and may even lead to safety hazards.
After the connection, a zero calibration is required. Connect the two leads and keep them in the empty open state, and click the "zero" button to calibrate. The purpose of this step is to eliminate measurement errors and ensure accuracy.
Now, it's time to make specific measurements. Depending on the type of circuit to be measured, choose the function to measure current, voltage, or resistance. The measurement results on the numerical display are read by connecting the positive and negative poles in the circuit using the measurement leads.
In practice, it is necessary to pay attention to safety. For example, when measuring voltage, you should make sure that the voltage range selected by the multimeter is higher than the voltage to be measured, otherwise the multimeter may burn out. In addition, it is also necessary to take care to avoid excessive current, touching the live part, and avoiding misoperation.
In addition to the basic voltage, current, and resistance measurements, other measurements such as frequency, temperature, and capacitance can be performed with a multimeter. Different measurement functions require an understanding of the corresponding operating procedures and precautions.
To sum up, to learn the use of a multimeter, you should first understand its structure and function, correctly select the measurement gear, connect the lead wire and calibrate the zero position, and then select the corresponding measurement function for measurement. It is necessary to pay attention to safety in operation, and gradually master more measurement skills through further learning Xi and practice. In this way, we can better apply the multimeter for electronic measurement work.