The power adapter is heat radiation, not the heat generated by electromagnetic radiation. The power adapter has good radiation isolation inside and does not produce so-called radiation.

The power adapter is converted from AC to DC, and then through the computer, it can not protect the computer, so it can protect the computer during the power outage.

If the power adapter does not support fast charging, then the output voltage will not reach the standard of fast charging. In other words, the use of dedicated lines, special, special planes, are indispensable.

The power adapter first converts the alternating current through the transformer and then rectifies and filters through the rectifier circuit to obtain an unsteady DC voltage. This power supply technology is mature, can achieve high stability, and the ripple is small, and there is no switching power supply. Interference and noise.

Power adapter is a commonly used power conversion device. It is widely used in electronic communication equipment, notebook computers, game consoles and other electronic products and information equipment. There are many types of power adapters, including AC/AC and AC/DC power converters. Various products

Now that technology is developing rapidly, the speed of updating mobile phones is getting faster and faster. The frequency of changing mobile phones is also increasing. There are always a few unwanted, old and bad power adapters in the house. Many people choose to put them. Throw it aside or throw it away,

The load short-circuit fault of the switching power supply (especially the short circuit or poor function of the DC/DC converter), at this time, should be disconnected from all the load of the switching power supply circuit, so as to distinguish the switching power supply circuit from the load circuit failure. Letter telegram. If the load circuit is disconnected

For the enterprise, product quality is the life of the enterprise, especially electronic products. In terms of power supply, product quality not only affects the performance and service life of the power supply, but also concerns the safety of the power adapter. Inferior power supplies can even cause fire and explosion.

In the self-oscillating converter considered here, the switching action is maintained by the positive feedback of a winding on the main transformer. The frequency is controlled by the drive clamp action, which corresponds to an increase in the field current during conduction. By controlling the amplitude of the primary current cutoff

The physical inspection of the surface of the switching power supply is an important basis for the troubleshooting of the switching power supply. At the same time, the appearance of the switching power supply components, circuit boards, solder joints, etc. Switching power supply defect faults are generally caused by errors in process manufacturing.

LED drive according to the output type is DC output type, divided into constant voltage and constant current two, mostly constant current drive; whether it can drive LED lights, mainly depends on whether the output voltage and current are within the LED bearing range. The power adapter is a regulated power supply, and the LED driver is a constant current power supply.

The flyback unit combines the functions of an isolation transformer, an output inductor, and a freewheeling diode in a transformer. This combination of electromagnetic integration makes the circuit very cost effective and efficient and stable DC output.

The figure shows a method of energy storage and transfer. When SW1 is turned on, the power adapter charges C1 and C2 through resistors R1 and R2, respectively, and their final voltage value will reach the power adapter voltage Vs.

When the notebook is fully charged and the power adapter plug is unplugged, the power adapter will be hot too hot. Although it is not surprising that the notebook power adapter is hot during charging, the temperature of the adapter is too high, and it feels when the plug is pulled. Hot

The power adapter is broken. The first thing we check is to see where the problem occurs. If it is a line fault, we must focus on checking whether the input line and the output line are energized. If the line is damaged, it can be solved by replacing the power line.

Although the mobile phone charger and the power adapter all have the same effect, they are still somewhat different in nature.

Power adapter refers to the external power supply used to convert the AC grid voltage into a fixed, single-channel low-voltage DC or low-voltage AC output voltage. It is widely used in various electrical products, especially information technology equipment, telecommunication terminal equipment and audio and video equipment.

Anyone who has worked on power supply design knows that during the test of the power adapter power supply, some whistling sounds are often heard, similar to the leakage sound emitted when the high voltage is bad, or the sound like a high voltage arc. Why is there a howling?

With the increase of electronic products around us, daily charging has become the norm. When charging, we often have mixed chargers, such as charging the iphone with the Ipad charger. So what impact does this have on the battery of an electronic product?

One of the most difficult problems in the design of a switching power adapter is to reduce the common mode conducted RF current to an acceptable range. This conductive electrical noise problem is mainly caused by parasitic static electricity and electromagnetic coupling between the switching elements and the ground plane.

The trick is to use the coup, today power adapter manufacturers come to teach you the clever skills of several current detection circuits. To know that current detection or feedback is usually required in equipment such as power supplies, current detection is usually amplified by a series sampling resistor in the amplifier...

We all know that each country has its own technology, just like the coins of each country are different. The power adapters produced are definitely different. Today, we typically say that the European power adapter and the US power supply...

Buy a power adapter online, you will find that the price gap is still very large, the same power of the power products, the price can sometimes differ by as much as tens of dollars. Why is this happening? So where is the price difference?

The direct-off-line power adapter is named because it is powered directly from the AC adapter, rather than the bulky 50-60Hz low-frequency isolation transformer commonly used with linear power adapters.

The ideal power adapter transient suppression device will open at normal voltage, can conduct electricity without delay under slight overvoltage, and does not allow voltage to increase during the clamping period, and can withstand unlimited current and power. The stress can return to the open path after passing

In the development of new products for switching power adapters, in order to ensure that the adapter can adapt to the operating requirements of different environments during use and provide users with continuous and stable current and voltage conversion work, engineers usually provide adapters...

With the development and innovation of power electronics technology, switching power supplies are widely used in almost all electronic devices. The combination of "switched power", "fashionable appearance", "stable performance" and "good quality" are favored by customers.

In the trend of international trade, it is more necessary to make the power adapter operate with the nominal input of 110V/220V. To meet these dual voltage requirements, a wide variety of technologies can be used, including one or more, manual...

A voltage-controlled power adapter is essentially a device with low output impedance. Because the output voltage and performance characteristics of any two or more devices are not exactly the same, when these devices are operated in parallel, the load current is not evenly shared.

As the power source of the whole security system, consumers must be cautious when choosing. If you choose a little carelessness, it will cause security risks. How to buy it? Pay attention to the following points when purchasing security monitoring power supply

Before the switching power supply leaves the factory, it must undergo rigorous testing, and the aging test must be done. After the aging test of the switching power supply, basically no problem occurs during use, and the service life and quality can be guaranteed.

The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It is generally composed of components such as a casing, a transformer, an inductor, a capacitor, a control IC, a PCB board, etc. Its working principle is converted from an AC input to a DC output; Way can be divided into

The power adapter provides a lot of convenience for our lives, so how do we repair the power adapter? The following Shenzhen Intermodal Electronics will let you know the five steps of power adapter repair

The newly purchased power adapter input current is larger than the original one. Can it be used? If your original adapter is the original one of the manufacturer, the voltage is the same, the current can be replaced by a small current, and vice versa.

I want to purchase a batch of power adapters, but I don't know if I should find that manufacturer. I don't know much about the power industry. Is that brand trustworthy?

With the advancement of mankind, the development of science and technology. Everyone in the modern family has large or small appliances. With electrical appliances, of course, it is inseparable from auxiliary equipment such as switching power supplies. The main thing we want to talk about here is the security power adapter.

The power adapter is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. It is commonly used in mobile phones and small electronic products.

The power adapter commonly used in the power adapter market is transformed, and can be understood as a low-voltage regulated power supply when the power is satisfied.

The development of science and technology has promoted the popularization of smart devices. However, the natural advantage of multi-functionality is the disadvantage of very fast power consumption. The power adapter is becoming smaller and easier to carry because of its smaller size in research and development.

The positive standard power adapter generally refers to the power adapter produced by the regular power adapter manufacturer through the safety certification.