The benefits of home appliance booking, the benefits of home appliances!! Urgent

Pre-deposit cash If you have pre-deposited cash, you can deposit 30 yuan in cash at the Gome store before April 29, and you can get 300 yuan in cash when you buy home appliances at the Gome store from April 30 to May 7. However, this 300 yuan coupon cannot be used on ** machine, ** machine, shock machine, and differentiated models.

There is also a kind of reservation is to book a certain machine before the night, when the night, the more people buy this model, the cheaper, even if you are not on the scene, you can also buy it at this price. If there are really a lot of people buying this **model,**it may be lower than that of May Day**.

There is also a kind of reservation that you said that there will be a return gift at that time.

May Day is not **.

If you make a reservation, the merchant will keep the goods for you, otherwise the goods will be shipped quickly when you want them.

The situation is different in different places, some places have it, some places don't. Some stores can, some cannot, it's best to ask your local Gome store before you go.

For example, in Changzhou, the store has a cash deposit ranging from 20 to 300 yuan, and from April 30 to May 7, you can directly use 200-3,000 yuan to buy household appliances in Gome. 20 yuan becomes 200 yuan, 50 yuan becomes 500 yuan, 300 yuan becomes 3000 yuan, ......

In Chongqing, 50 yuan can be pre-deposited, which can be increased to 100 yuan.

In Hainan, a deposit of 10 yuan can be used as 100 yuan; The pre-deposited 100 yuan can be used as 1000 yuan.

Wait, it should all be about the same;

As for **, Gome Suning and even Five Star Electric are carrying out such activities.

It is characterized by the fact that consumers first form a group, generally with a scale of thousands or tens of thousands of people, so that the right to speak is completely in the hands of consumers, and it is very affordable to buy things;

Now Gome Suning takes the initiative to provide **special machines, only some products can**, and give **.

It should be mutually beneficial and both parties feel good. But it's not all of them, and Beijing hasn't heard of them.

But it's better to buy than to sell, always remember that.

Improve the standard and quality of living, convenience (you can study, you can entertain, know the world without leaving home, laundry and cooking, you are not afraid of cold in winter and hot in summer, and you are not afraid of dark nights) can prevent theft, make money, defend yourself, and can be healthy; Nowadays, there are many kinds of electrical appliances, and there are all kinds of things!

You don't have to spend a lot of money to learn, just use it directly

3. Some more troublesome things are simpler, more convenient and safer 4. For us to expand the scope of work and life, such as computers and TVs 5, the more advanced the more multi-functional and exquisite, and it is pleasant to use and more space-saving.

There are too many benefits of electrical appliances, which aspect do you mean, the most important thing is that electrical appliances bring us a lot of convenience and very powerful help.

This is the "CHINT" AC contactor, which is used to turn on and disconnect the power supply of the distribution cabinet (all the shunt switches at the lower end of the copper bar), and the control button should be installed on the cabinet door.

This is a high-power circuit breaker that is controlled by a button to power on or off.

Electric light - lighting.

Mobile phone - convenient communication.

Computers - commonly used in life.

Washing machine - saves time on laundry and at the same time saves effort.

Dry cell battery – provides drain power for portable electrical.

Cars - a means of transportation. In addition, on some occasions, the side is a symbol of your status.

Capacitors are often referred to simply as capacitors, which are denoted by the letter C.

Definition 1: A capacitor, as the name suggests, is a 'container for electricity' and is a device that holds an electric charge. English Name:

capacitor。Capacitors are one of the electronic components widely used in electronic devices, which are widely used in DC blocking, coupling, bypass, filtering, tuning loops, energy conversion, control circuits, etc.

Definition 2: A capacitor, any two conductors (including wires) that are insulated from each other and in close proximity to each other form a capacitor.

The role of capacitors in electrical circuits.

In DC circuits, capacitors are equivalent to open circuits.

This has to start with the structure of the capacitor. In its simplest form, a capacitor consists of plates at both ends and an insulating dielectric in the middle [2]. When energized, the plates become electrified, forming a voltage (potential difference), but the middle is an insulating substance, so it is not conductive.

However, this is the case if the critical voltage (breakdown voltage) of the capacitor is not exceeded. We know that any substance is relatively insulated, and when the voltage at both ends of the substance increases to a certain extent, the substance can conduct electricity, and we call this voltage the breakdown voltage. Capacitors are no exception, and when a capacitor is broken down, it is not an insulator.

However, in middle school, such voltages are not seen in circuits, so they all work below the breakdown voltage and can be regarded as insulators.

However, in AC circuits, because the direction of the current is a certain function of time. The process of charging and discharging capacitors has time, and at this time, a changing electric field is formed between the plates, and this electric field is also a function of time. In fact, an electric current is passed between the capacitors in the form of a field.

In middle school, there is a saying that it is called AC and DC resistance, which is the property of capacitors.

The basic functions of a capacitor – charge and discharge.

Charging and discharging are the basic functions of capacitors.

The process of charging a capacitor to charge (storing charge and energy) is called charging. At this time, the two plates of the capacitor are always positively charged on one plate and the other plate on the other plate with the same amount of negative charge. If one plate of the capacitor is connected to the positive pole of the power supply (such as a battery pack), and the other plate is connected to the negative pole of the power supply, the two plates will each carry the same amount of dissimilar charge.

After charging, there is an electric field between the two plates of the capacitor, and the electrical energy obtained from the power supply is stored in the capacitor during the charging process.

The process by which a discharged capacitor loses its charge (the release of charge and energy) is called discharge. For example, if you connect the two poles of a capacitor with a wire, the charges on the two poles will neutralize each other, and the capacitor will release charge and energy. After discharge, the electric field between the two plates of the capacitor disappears, and the electrical energy is converted into other forms of energy.

In general electronic circuits, capacitors are commonly used to achieve bypass, coupling, filtering, oscillation, phase shift, and waveform transformation, which are the evolution of their charging and discharging functions.

For more information, please refer to:

For example, the capacitor on the electric fan plays a starting role, the capacitor capacity decreases or is damaged, the motor cannot be started or the speed slows down, the capacitor after the transformer rectification plays a filtering role, and the capacitor on the audio channel has a coupling effect. Wait a minute.

This is the inverted switch, which is to adjust the phase sequence of the three-phase electricity through the switch, without reversing the line, for example, if you connect a motor with three power supplies, and find that it is reversed after connecting, then you need to remove the wire and reconnect it without this switch, and you don't need to have it.

XL-21 cabinet electrical box XL-21 series power distribution box is suitable for power distribution and lighting distribution of three-phase four-wire power system with AC frequency of 50Hz and voltage of 500V and below in industrial and civil buildings. At the same time, it is suitable for making all kinds of motor starting cabinets, including full-voltage direct starting cabinets, full-digital control soft starting cabinets, auto-coupling step-down starting cabinets, star-delta starting cabinets, multi-speed motor starting cabinets, etc. It is a power distribution device with simple structure, reliable operation and low cost.

1 All electrical appliances, as the name suggests, are machines that distribute current. In the ignition system of automobiles, high-voltage electricity is generated by the ignition coil, and a thick wire is transmitted to a machine, which is the distributor. After the distributor receives the high-voltage electricity that comes, it relies on the internal rotating metal body to distribute the high-voltage electricity in turn, passes through the high-voltage line of the sub-cylinder, and then transmits it to the spark plug of each cylinder, forms a high-voltage arc at the head of the spark plug, ignites the gasoline in the gas cylinder, and the gasoline ** pushes the piston, and the engine starts to run.

Because it has the function of distributing high-voltage electricity, it is called a distributor. When I opened the lid of the machine, I saw that there were several threads of the same color and the thickness of the cigarette loosely distributed on it, and that thing was.

The generated high-voltage electricity is distributed to different high-voltage caps, so that the cremation plug produces an electric spark point gasification gas in the cylinder

A cylinder is divided into an outlet, and a few cylinder distributors are divided into several outlets.

The working principle is that the ignition output line --- a distributor --- a spark plug.

The intermediate relay is a kind of relay, and the one you said should belong to the low voltage, 12V, (of course, there are also 220 ones, which are relatively few).

For example, if I use PLC to control the motor, the output voltage of PLC is 24V, but the circuit I want to control is 220V, at this time, I can't directly connect the PLC to the 220V circuit, but control the intermediate relay through PLC, and then the intermediate relay controls the 220V circuit. (Actually, the PLC can be connected to the 220V circuit, so I say this for you to understand).

The classmates upstairs are also right, mainly used for signal control, because signal control is generally low voltage.

Intermediate contactors, generally signal control.