The so called insufficient power supply refers to insufficient voltage or insufficient current?

1. The so-called insufficient power supply generally refers to the voltage is not enough to the rated value, because in general, the change in current is very small. Strictly speaking, it can be expressed in terms of the lack of power provided by electricity.

2. Voltage, also known as potential difference or potential difference, is a physical quantity that measures the energy difference between a unit charge in an electrostatic field due to different electric potentials. Its magnitude is equal to the work done by a unit positive charge to move from point A to point B due to the action of an electric field force, and the direction of the voltage is specified as the direction from the high potential to the low potential. The SI unit system of voltage is volts (V, referred to as volts), and the commonly used units are millivolts (mV), microvolts (V), kilovolts (kv), etc.

This concept is similar to the "water pressure" caused by the high and low water level. It should be pointed out that the term "voltage" is generally only used in electrical circuits, while "potential difference" and "potential difference" are generally applied to all electrical phenomena.

3. Scientifically, the amount of electricity passing through any cross-section of the conductor per unit time is called current intensity, referred to as current. Usually with letters.

From 1775 to 1836, a French physicist and chemist who made outstanding achievements in the study of electromagnetism and also contributed to mathematics and physics. The SI unit of electric current is named after its surname), abbreviated as "ampere", symbol.

a", which also refers to the directional movement of the charge in the conductor.

10,000 volts to pass through the transformer into a city voltage for people to use, insufficient power supply is that the power consumption exceeds the maximum current, the power remains the same, the current is too large, the voltage drops, in fact, the voltage and water pressure are the same, the power of electricity is called electromotive.

The voltage drop is certain, considering that the head and end meet the requirements of electricity, the power supply department regulates the system voltage, and there are many ways to adjust the terminal of the transformer of the substation, the input of the phase modulator, the input of the capacitor, etc.

Look at the line matching, look at the transmission distance.

220V alternating current, the voltage is normal and the current is not enough There may be the following reasons:

Excessive circuit load: If the circuit is overloaded, such as when a high-power appliance or equipment is plugged in, it may greatly limit the current in the circuit, making it insufficient.

The length of the line is too long: If the length of the line is too long, the current may be hindered by the resistance and inductance of the wire, etc., when passing through the wire, so that the current will not be enough.

Aging or poor quality of the wire: If the wire is aging or of poor quality, resulting in an increase in resistance within the line, the current may be limited. In addition, large inductances may be generated within the line, which will also limit the current.

Insufficient power supply: If the power supply itself is insufficient, it may not be able to provide sufficient current.

In a real situation, the above reasons may also exist at the same time, resulting in insufficient current or the appliance not working. If this happens to you, it is advisable to have a professional electrician inspect the circuit or equipment to ensure that it is safe to operate.

What should I do if the 220V current is not enough? The voltage in family life is basically 220 volts, if the voltage is not enough, then there will be unstable operation of electrical appliances or tripping of air switches. The voltage is not enough, probably because we use more household appliances, we can unplug a few high-power household appliances, so that we can achieve the purpose of boosting.

In fact, there is also a kind of booster on the market, if the long-term voltage is not enough, affecting our daily use, we can buy a booster and install it at home, so that we can ensure the safety of electricity. 220 is the voltage, not the current. The current is related to the power of the electrical appliance.

For appliances with high power, the higher the current, and with less power, the lower the current. Therefore, if you arrange the wires, press the switch, and install the electric shock protector, you must decide by the current. So be sure to hire a full-time and licensed electrician to operate.

If you don't know it, don't mess up. Don't get into an accident, remember! The two-phase electricity is not enough, and only the three-phase electricity of 380V can be installed.

If the voltage is not enough and the current is not enough, it is because the internal resistance of the power supply is too large, or it is interpreted as exceeding the rated current of the power supply, and the situation you mentioned will occur. When electrical appliances work, the voltage and current of the power supply must be consistent. If the light voltage is the same, we can use a toy generator to drive a factory, which is obviously not possible.

If you want to learn this knowledge, you can start with the basic circuit, and after learning the basic circuit, many electrical problems can be explained by yourself.

An electrical load needs to reach both its working voltage and its working current.

Of course, the current should be considered, for example, the batteries we often see are marked with 900mA and so on; To use a simple analogy: it would take 20 cubic minutes to flow down from the height of a canal, but if there is a shortage of water upstream, it will only take 2 cubic minutes, so that the following needs and work cannot be met. Relevant information can be found on the electrical network, be patient and look for it, I am not a professional.

If it is an incandescent bulb, it will light up as long as there is voltage.

If the lamp is not broken, you should consider whether the lamp socket is not in poor contact (especially the wire connecting the lamp base), or there is a problem with the wiring connecting the lamp, and check it.

If it is a fluorescent lamp, energy-saving lamp, etc., it should be a problem with the ballast circuit, and you can replace the ballast.

If the lamp is fine, then consider the poor contact between the wiring of the lamp holder or the lamp holder itself, and there is a poor contact between the line of the lamp and the main line, if the line is buried in the wall, it will be more troublesome. You can take the good lamp lit in other places to try whether this lamp is lit or the lamp that is now connected to this lamp is really lit in other places, then it must be a problem with the line (including the lamp holder), carefully check it to find out the fault point.

There can be no voltage instability, if the voltage is unstable, then all your electrical appliances will not meet 220, and you are an individual phenomenon, you should consider whether the wire connection is not in poor contact, secondly, the metal contact surface is oxidized and the poor contact is also possible, and the ring lamp does not need ballast, just turn on 220.

The voltage of 200 volts will not cause the bulb to not light up, just dim, use a meter to measure the voltage of the lamp port, and then judge.

The voltage of the ground is unstable, and a voltage regulator should be installed.

It may be that the joint is not in good contact Check the joint.

See if the connector of the wire is connected!

1. Troubleshooting: 1Check whether the power cord is connected properly; 2.

Check whether the load line is connected properly; 3.Check whether the capacity of the load interface is less than the rated voltage of 220V; 4.Check whether the capacity of the motor is less than the rated voltage of 220V; 5.

Check whether the circuit connection is open or not; 2. Solution: 1If the power line is connected normally and the load line is connected normally, check the motor capacity and re-select the motor that meets the rated voltage of 220V; 2.

If the capacity of the load side is too small, the interface that meets the rated voltage of 220V can be replaced; 3.Check the circuit connection, if there is an open circuit, the wire should be replaced or the wire should be repaired;

Summary. If the voltage is not enough current, the driving ability of the power supply circuit is not enough, and the load capacity is not strong enough, if it is a solid battery power supply, the output current of the battery pack can be increased in the form of multiple batteries of the same type in parallel; If the power supply is in the form of electronic circuits, it is necessary to change the circuit structure of the output stage or the parameters of related circuit components in the circuit structure, or add additional power amplifier circuits to increase the output current of the power supply.

What should I do if the 220V AC voltage is enough and the current is not enough.

Hello, I'm glad to answer for you, you can buy a regulator with low input impedance, or just buy a UPS.

If the voltage is not enough current, the driving ability of the power supply circuit is not enough, and the load capacity is not strong enough, if it is a solid battery power supply, the output current of the battery pack can be increased in the form of multiple batteries of the same type in parallel; If the power supply is in the form of electronic circuits, it is necessary to change the circuit structure of the output stage or the parameters of related circuit components in the circuit structure, or add additional power amplifier circuits to increase the output current of the power supply.

I've bought a 30 kilowatt regulator and still can't get a 5,000 watt quench water heater.

Dear, you need to contact a professional for a professional inspection to see if it is a problem with the water heater, under normal circumstances, the voltage can drive a 5000W water heater.