1 5 How much V does DC show on a multimeter?

Approximately, the shadow of the watch hand and the watch hand in the reflector on the dial should coincide when reading, so that the reading can be accurate; The angle from which you take the photo, the two do not coincide, so I can only tell you about it. It can be measured directly with the 250V AC voltage level of the universal meter, and the reading of the multimeter pointer is the actual measured voltage.

ACV refers to alternating current voltage and DCV refers to direct current voltage. Electricity that changes the magnitude and direction of voltage over time is called alternating current, such as alternating current 220V for civil electricity, industrial electricity for AC 380V, etc. If the voltage size and direction do not change with time, it is called direct current, such as dry batteries, storage batteries.

The basic principle of the multimeter is to use a sensitive magnetoelectric DC ammeter (micro-ampere meter) as the meter head. When a tiny current is passed through the meter head, there is a current indication. However, the meter head cannot pass a large current, so it is necessary to shunt or step down the voltage by connecting some resistors in parallel with series on the meter to measure the current, voltage and resistance in the circuit.

Extended information: Precautions for the use of multimeter: 1. Be familiar with the meaning of each symbol on the dial and the main functions of each knob and selector switch.

2. Mechanical zeroing should be carried out before the test. 3. According to the type and size to be measured, select the gear and range of the transfer switch to find out the correspondence.

ACV and DCV on the multimeter mean AC voltage and DC voltage respectively. The multimeter is an indispensable measuring instrument for power electronics and other departments, and its main purpose is to 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. In physics, AC stands for AC power supply, DC stands for DC power source, and V stands for voltage. So ACV stands for AC voltage and DCV stands for DC voltage.

The main functions of the multimeter are: measuring DC voltage (DCV), measuring AC voltage (ACV), measuring DC current (DCA), measuring AC current (ACA), measuring resistance ( ), measuring diode forward voltage drop (VF), measuring transistor emitter current amplification factor (HRG), and some can also measure capacitance (C), conductivity (ns), temperature (T), frequency (F), and increased use.

You've said that the direct current, the multimeter measurement will also be, unless the meter is broken.

MultimeterThe DC symbol is DC.

Direct current. Generally, it is represented by DC or horizontal wire, alternating current.

Generally, AC or sinusoidal curve is used.

The wavy lines of the representation; For multimeters, AC voltage is written as ACV or V with caution, and AC current is generally written as ACA or A.

If the magnitude and direction of the voltage change over time, it is called a fluctuating voltage. For circuit analysis, one of the most important voltage fluctuations is the sinusoidal alternating current voltage (abbreviated as alternating voltage), the magnitude and direction of which periodically change with time according to the law of positive width and stroke. The instantaneous value of the AC voltage is indicated by the lowercase letters u or u(t).

The device that provides voltage in a circuit is a power supply.

Multimeter considerations

If there is no concept of the measured voltage range in advance, the range switch should be turned to the highest gear, and then transferred to the corresponding gear according to the displayed value. If "1" is displayed at the high level during measurement, it means that the accompaniment has exceeded the one-way range, and the range switch must be turned to a higher gear.

The input voltage should not exceed 1000V, if it is exceeded, there is a danger of damaging the instrument circuit, when measuring the high voltage circuit, pay attention to avoid touching the high-voltage circuit.

The DC symbol of the multimeter is DC.

Direct current is generally represented by DC or horizontal wires, and alternating current is generally represented by AC or squiggly lines with sinusoidal curves; For multimeters, AC voltage is generally written as ACV or V, and AC current is generally written as ACA or A.

If the magnitude and direction of the voltage change over time, it is called a fluctuating voltage. For circuit analysis, one of the most important changes in electrical start-up voltage is sinusoidal alternating current voltage (abbreviated as alternating voltage), the magnitude and direction of which periodically change with time according to the sinusoidal law. The instantaneous value of the AC voltage is indicated by the lowercase letters u or u(t).

The device that provides the voltage in the cartridge circuit is the power supply.

What a multimeter does:

The basic function of the multimeter is to measure: resistance, AC and DC voltage, AC and DC current, on/off;

Expansion: Measuring diodes and transistors.

The multimeter has the advantages of multiple uses, wide range, and easy to use, and is the most commonly used tool in electronic measurement. It can be used to measure resistance, AC and DC voltage and DC voltage. Some multimeters can also measure the main parameters of the transistor and the power of the device.

The DC current level of the multimeter is a multi-range DC voltmeter.

The DC voltage level of the multimeter is a multi-range DC voltmeter.

Depending on the voltage divider, the corresponding range is also different. <>

Summary. Hello, it is a pleasure to serve you and give you the following answer: Generally speaking, the negative voltage range of the multimeter is generally between -9V and -1000V, depending on the model of the multimeter.

If the multimeter has a negative voltage problem, it may be caused by insufficient power supply or damage to the line. Workaround and practice steps:1

Check whether the power supply of the multimeter is normal, if the power supply is insufficient, you can try to replace the power supply or replace the battery. 2.Check whether the wiring of the multimeter is damaged, if the wiring is damaged, you can try to replace the wiring with a new one or contact the manufacturer for repair.

3.If the above steps do not solve the problem, you can try to use an external power supply to provide negative voltage to ensure the normal use of the multimeter. Personal Tips:

1.When using a multimeter, ensure the integrity of the power supply and the line to avoid negative voltage problems. 2.

When using an external power supply to provide negative voltage, ensure the accuracy of the voltage to avoid damaging the multimeter.

Hello, it is a pleasure to serve you and give you the following answer: Generally speaking, the negative voltage range of the multimeter is generally between -9V and -1000V, depending on the model of the multimeter. If the multimeter has a negative voltage problem, it may be caused by insufficient power supply or damage to the line.

Workaround and practice steps:1Check whether the power supply of the multimeter is normal, if the power supply is insufficient, you can try to replace the power supply or replace the battery.

2.Check whether the wiring of the multimeter is damaged, if the line is cracked and the circuit is damaged, you can try to replace the new line or contact the manufacturer for repair. 3.

If the above steps do not solve the problem of Xianyuanshi, you can try to use an external power supply to provide negative voltage to ensure the normal use of the multimeter. Personal Tips:1

When using the meter, it is necessary to ensure the integrity of the power supply and the circuit to avoid negative voltage problems. 2.When using an external power supply to provide negative voltage, ensure the accuracy of the voltage to avoid damaging the multimeter.

Hello, it is a pleasure to serve you and give you the following answer: Generally speaking, the negative voltage range of the multimeter is generally between -9V and -1000V, depending on the model of the multimeter. If the multimeter has a negative voltage problem, it may be caused by insufficient power supply or damage to the line.

Workaround and practice steps:1Check whether the power supply of the multimeter is normal, if the power supply is insufficient, you can try to replace the power supply or replace the battery.

2.Check whether the wiring of the multimeter is damaged, if the line is cracked and the circuit is damaged, you can try to replace the new line or contact the manufacturer for repair. 3.

If the above steps do not solve the problem of Xianyuanshi, you can try to use an external power supply to provide negative voltage to ensure the normal use of the multimeter. Personal Tips:1

When using the meter, it is necessary to ensure the integrity of the power supply and the circuit to avoid negative voltage problems. 2.When using an external power supply to provide negative voltage, ensure the accuracy of the voltage to avoid damaging the multimeter.

Summary. The maximum display value of the file is 200 (the indication value should be subtracted from the indication value of the two short-connected pen pens.)

The maximum display value of the file is 2k (indicated.

The maximum display value of the file is 20k (indication.

The maximum display value of the file is 200k (indicated.

5. It is divided into 7 gears k k m m ) How to see how many volts are measured by the electronic multimeter to measure the DC voltage?

The maximum display value of the file is 200 (the value of the stool silver should be subtracted from the value of the imitation silver short two watch pens.) The maximum display value of the file is 2k (the maximum display value of the jujube feast value file is 20k (the maximum display value of the file is 200k (the display value is divided into 7 gears: k k k m m m).

Current file (A) file (Min Xiao AC and DC shared file, when used, the black watch pen is inserted into the COM hole, the red watch pen is inserted in the MA hole, and more than 200mA should be inserted in the 20A hole) The maximum display value of the file is 2mA (the maximum display value of the indicator file is 20mA (the maximum display value of the indicator file is 200mA (the maximum display value of the virtual value file is 20A (indicating the value.)

How to use this table?

It's up to you which gear you choose.

Measure the voltage of 380 volts to see if there is electricity in every phase.

Select the 500V alternating current for measurement.