What can a general multimeter be used to measure

Generally, the multimeter can measure DC current, DC voltage, AC voltage, resistance and audio level, and some can also measure AC current and capacitance.

Inductance, temperature, and semiconductors (diodes.

transistor).

Digital multimeters have become mainstream and have replaced analog meters. Compared with analog meters, digital meters have high sensitivity and accuracy.

High, clear display, strong overload capacity, easy to carry, more convenient and simple to use, its measured value by LCD screen.

It is displayed directly in the form of numbers, which is easy to read, and some also have a voice prompt function.

The average electrician won't tell you that in fact, a multimeter can not only measure voltage, but also distinguish between zero live wires.

Walk into the DMM to understand what it can measure and what the beep does.

It is an indispensable measuring instrument for power electronics and other sectors, and its main purpose is to measure voltage, current, and resistance. Multimeter, also known as Wankong code hall meter, multimeter, three meters, multimeter, etc. Multimeters are divided into analogue multimeters and digital multimeters according to the way they are displayed.

It is a versatile, multi-range measuring instrument. The multimeter can generally measure DC current, DC voltage, AC molded current, AC voltage, resistance, audio level, and some can also measure AC current, capacitance, inductance and some parameters of semiconductors. A multimeter is a magnetoelectric meter with a rectifier that can measure various electrical parameters such as AC and DC current, voltage, resistance, etc.

There are generally several ranges for each charge. Also known as multi-table or simply multi-table. A multimeter consists of a magnetoelectric ammeter (meter), a measuring circuit, and a selector switch.

With the selector switch, a wide range of electrical parameters can be conveniently measured. The main basis for circuit calculations is the Ohmding law of closed circuits. There are many types of multimeters, and they should be selected according to different requirements when using them.

Use a multimeter to measure the diode position for diodes.

A multimeter is usually used to measure the forward and reverse resistance of a diode to determine its goodness and polarity. The voltage polarity between the two test pens is exactly the opposite of the two markings of the multimeter and the hidden binding post, that is, the negative test pen is positively charged and the positive test pen is negatively charged. The RX100 or RXLK file of the multimeter is generally used for testing.

When the red and black watch pens are connected to the two poles of the diode respectively, if the resistance value indicated by the multimeter is relatively small (usually 100-10000), and the resistance value indicated is greater than several hundred thousand ohms after the electrodes connected to the red and black watch pens are exchanged, it means that the diode has good single conductivity, and the red pen after exchange is connected to the positive pole of the diode, and the black watch pen is connected to the negative pole.

If during the test, the resistance value measured by the exchange meter pen is very large, or even yes, it means that the diode has been broken inside; If the resistance measured by the meter pen is very small, or even zero, it means that the diode has been short-circuited.

Multimeter: It is an indispensable measurement instrument for power electronics and other departments, generally with the main purpose of measuring voltage, current and resistance. Multimeters are divided into pointer multimeters and digital multimeters according to the way they are displayed. It is a multi-functional, multi-range measuring instrument.

Generally, the multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, and some can also measure AC current, capacitance, inductance and some parameters of semiconductors. The multimeter can be used not only to measure the resistance of the object to be measured, but also to measure the AC and DC voltage.

The multimeter can also measure the main parameters of the transistor as well as the capacitance of the capacitor, among other things. Being proficient in the use of multimeters is one of the most basic skills in electronic technology. <>

A multimeter can measure voltage, current, and resistance.

Multimeters are divided into pointer multimeters and digital multimeters according to the way they are displayed. It is a multi-functional, multi-range measuring instrument, generally multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, and some can also measure AC current, capacitance, inductance and some parameters of semiconductors (such as).

A multimeter is actually called a three-purpose meter. It is mainly to measure the three basic physical quantities of resistance, voltage and current. The functions of other test diodes and transistors are also calculated by the variation of these three items.

A DMM uses the CPU to read a component to be measured.

There are a few reasons why the display numbers you said would jump around.

1: Your measurement is unstable, so it will cause random jumping, which is the result of correct reading. It's not to blame that there is a problem with the multimeter, it's that the physical quantity to be measured is indeed changing;

2: Your multimeter has high accuracy. For example, the accuracy of your multimeter is accurate, so for the general voltage, current and other voltage stabilization, filtering does not reach the ultimate circuit, there will definitely be a beating envy socks. This situation is the same as the first;

3: The battery of the multimeter is low. In this case. It's not just that it beats. It can also be felt that the display is not so clear. In fact, the measured values are no longer accurate at this time.

Therefore, the multimeter should generally be turned off after use, of course, the current multimeter will automatically turn off. It takes a little more time, though. And if you don't use it for a long time.

It is recommended to remove the battery. In order to avoid the battery not being used for a long time, it will cause battery leakage. If you need a measurement with high accuracy, you should choose or negotiate a multimeter with high accuracy.

It is necessary to calibrate the accuracy of the multimeter regularly.