Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
News
Home > News
Introduction to six level energy efficiency of power adapter
2020 / 04 / 28
The six level energy efficiency standard is mainly for the external power supply products. With the enhancement of people's awareness of energy conservation and environmental protection, the AC-DC power adapter manufacturers have higher and higher requirements for the external power supply (such as current adapter, switching power supply, charger, etc.). In 2016, the six level energy efficiency standard was officially launched. The no-load power consumption requirements for the efficiency of the external AC-DC power supply in the active mode are higher than the current requirements Higher, so the power meter requirements for power measurement are higher. According to the current standards of the United States and Europe, the accuracy of the power meter is not less than 0.15%. Level 6 energy efficiency AC-DC power adapter energy efficiency level: Energy efficiency grade: it is a grading method to show the difference of energy efficiency of household electrical appliances, according to the relevant provisions of the standard, Level 1 indicates that the product has reached the level of power saving and low energy consumption; Level 2 indicates that the product is relatively energy-saving; Level 3 indicates that the product energy efficiency is the average level of China's market; Level 4 indicates that the energy efficiency of the product is lower than the market average;
The Abnormal Noises of Power Adapter
2020 / 04 / 27
The power adapter uses a switching power supply and does not emit hum, but may emit high-frequency howling. The switching power supply works in a high-frequency state. In order to avoid magnetic saturation, a high-frequency transformer needs to leave a magnetic gap between the magnetic cores. In addition, there may be howling between the coil and the magnetic core due to process problems. The howling of transformers is mainly noisy, and there are no other hidden dangers. To eliminate this kind of calling, we must work hard on high-frequency transformers. It may not be possible to eliminate this noise for circuits with relatively low operating frequencies. However, as long as it works normally and there is noise, it does not matter. If you really hate this kind of sound, the best solution is to go with a power adapter of the same specification.
The Purchase Requirements of Data Cable
2020 / 04 / 25
1. Transmission speed: The transmission speed is mainly affected by the interface type of different versions. Now it is basically the interface of the USB3.0 version. In theory, the transmission speed can reach 500MB / s, and some even have reached the USB3.1 interface. In theory, the transmission speed It has reached 1000MB / s, and if the transmission speed is lower than the USB3.0 version, so it is not recommended to buy. 2. Wire length: Many people will buy very long data lines for convenience, but the longer the data line, the greater the line resistance and the greater the current consumption. A data line that is too long will also affect the data transmission rate. So it is best to choose a data cable that is as long or shorter as the original cable. 3. Whether it is original: You can choose the original product if you have the conditions, but there is no need to buy the original product. If you choose a good after-sales service, the better the qualification and reputation of the business, the lower the failure rate will be.
What are positive and non-standard power adapters?
2020 / 04 / 25
The power adapter configured on the original machine is called the regular national standard. The counterfeit and fake fake products in the small workshop have poor quality, large voltage output ripple coefficient, and large output voltage error. This product is called non-standard.
The Outer Material of Data Cable
2020 / 04 / 24
At present, there are mainly three outer materials of data cable on the market: 1. PVC material. It has non-flammability, high strength, resistance to climate change and excellent geometric stability. But this material has been abandoned by many mobile phone manufacturers, because of the emergence of better performance TPE material. 2. TPE material is actually a kind of soft rubber material, its elasticity and toughness have been greatly improved compared with PVC material. The most important thing is that it is more environmentally friendly and can be recycled. At present, most mobile phone data cables are made of TPE material. 3. Braided wire are made of nylon material. Nylon is a kind of clothing material, so the folding endurance and durability are higher than PVC and TPE materials.
There are several situations where the power adapter is broken?
2020 / 04 / 24
1. The current at the output end of the 12V power adapter suddenly disappears, or an electrolytic capacitor swells and bursts at the output end by the indicator light (after power on) 2. The indicator light of the 12V power adapter is not bright or the computer indication is not bright when received on the computer, the computer cannot be turned on, etc., indicating that the adapter has a problem. 3. Cannot be used normally, charging and booting can not be normal. 4. Nothing happens when plugged into the computer. 5. The calorific value increases after the power is turned on and the temperature is abnormal. Approach: 1. First, you can judge the situation according to the instructions. You can see the indicator light of the power adapter. If the indicator light is on, it is generally believed that there is no problem from the power supply to the adapter. 2. Check whether there is electricity between the 12V power adapter and the computer. It can be displayed by the indicator light of the notebook. When the power is charged to the notebook, the charging indicator light will be on. Otherwise, it will not light. Or try to exchange a power adapter of the same brand. Use the power adapter to hold the other party's laptop. If the other party's computer is working properly, the power adapter is fine. Otherwise, there may be a problem with the power adapter. If the other party's power adapter is plugged into your computer, the computer works normally, but using your own power adapter does not work properly, then there is a problem with the power adapter. 3. Observe the computer's indicator light changes. If you plug in the power adapter, you can see that the charging indicator light is on and off, and it has not been off for some time, it is the problem of the power adapter interface in th
What does power adapter accuracy mean ?
2020 / 04 / 23
Power supply accuracy refers to the accuracy of regulated power supply. The accuracy is the degree of proximity between the observed value and the true value. When each physical quantity is to be expressed in numerical value, a standard must be established first and a unit must be selected. In the structural design, different precision should be set for different links, and higher precision should be set for sensitive links, so that higher overall working precision can be obtained through more economical methods. matters needing attention :Power supply is a device that provides power to electronic equipment, also known as power supply, which provides the power required by all parts of the computer. The power of the power supply, the stability of the current and voltage will directly affect the performance and service life of the computer. Computer power supply is a kind of closed and independent component installed in the main box. Its function is to change alternating current into 5V, - 5V, + 12V, - 12V, + 3.3V and other stable direct current through a switch power transformer, so as to supply the system components in the main box, such as system version, floppy disk, hard disk drive and various adapter expansion cards. Uninterruptible power supply (UPS) supported by HP, such as HP powertrust, can be protected against instantaneous power failure. The connection mode between disk and power supply circuit should make the mirror copy connected to different power supplies ZD. The root disk and its corresponding nodes should be powered by the same power circuit
The Types of Mobile Phone Data Cables
2020 / 04 / 23
The mobile phone data cable is a cable used to connect the mobile phone to the computer, and has both charging and data transmission functions. At present, there are three kinds of mobile phone data cables mainly used in the market: 1. Lightning data cable The Lightning connector is for iphone.There are 8 contacts on both sides of the interface, so both sides are universal. 2. Micro-USB data cable Micro USB is the first unified mobile phone data interface. 3. Type-C data cable Type-C interface transmission is bidirectional, ultra-thin port. Like Apple's ightning interface, Type C ports have the same front and back sides.
How does the power adapter communicate with the mobile phone during the fast charging process?
2020 / 04 / 22
USB power delivery (usbpd) is one of the current mainstream fast charging protocols developed by usb-if organization. It can increase the default maximum power 5V / 2A type-C interface to 100W power. And can carry out two-way or even networking power transmission, with system level power supply scheme. Usbpd communication carries out half duplex communication through the modulation of FSK signal coupled with AC on VBUS (24MHz), so as to realize the charging process of mobile phone and charger. Source end and sink end respectively represent adapter end and sink controller of internal chip of mobile phone. From the perspective of USB communication transmission, it can be understood as usbhost (master device) and usbotg (slave device). (5V/9V/12V/15V/20V) When the cable is connected, the SOP communication of PD protocol starts on the C C line (type-C interface communication configuration channel), so as to select the specification of power transmission. In this part, the sink end asks the source end for the power configuration parameters (5V / 9V / 12V / 15V / 20V) that can be provided. Take 9V charging of mobile terminal and adapter as an example. The overall process is as follows: USB OTG terminal (slave device: adapter terminal) monitors the voltage status on VBUS. If there is 5V voltage of VBUS and it is detected that the ID pin of OTG is 1K pull-down resistance, it means that the cable supports usbpd communication. At this time, the communication process begins. 1. Sink end initiates SOP (initial stage), starts usbpd equipment manager of source end, and applies for the specification data provided by source end; 2. The source terminal replies to the list of specifications that can be provided, that is, according to the usbpd specification, parse the message to get all the voltage and current list pairs supported by the adapter; 3. Sink terminal returns to the selected voltage specification, i.e. select a
Maintenance Method of Power Adapter
2020 / 04 / 22
1. Do not use chemicals, cleaning agents or strong detergents to clean the power adapter. To remove the external stains of the power adapter, use cotton and a small amount of absolute alcohol to scrub. 2. As an electronic product, accidentally entering water or being exposed to moist air when not in use for a long time will cause different degrees of corrosion or oxidation to the internal electronic components. 3. The power adapter is actually a fragile component, and the internal components cannot withstand the knocking. 4. Periodically clean the power adapter and the power adapter interface. When cleaning, use a damp cloth or antistatic cloth. Never use dry cloth! 5. Do not place the charger in a place where the temperature is too high. High temperatures can shorten the life of electronic devices, destroy chargers, and deform or melt some plastic parts. Do not store the charger in a cold place. When the charger works in a cold environment, the internal temperature rises, and there will be moisture in the charger, it will destroy the circuit board.
2020 / 04 / 21
Power supplies with digital control have many benefits at the device and system level. Power performance can be dynamically optimized in installation and operation, and more extensive system control and monitoring power characteristics can be achieved for efficient integration. "Connected" manufacturing industries, such as industry 4.0 or the "fourth industrial revolution", benefit in particular from the Internet of things (IOT). This article explains what digital controls are in the power supply and the benefits offered in standalone and connected applications. Background: digital control in power supply may mean different things, from simple state / alarm digital signal and on / off control of traditional analog controller, adding more complex functions through simple microcontroller, to fully realize feedback loop compensation with digital signal processor (DSP). The latest technology allows for flexible configuration of power features and performance during development and debugging, as well as dynamic configuration in the final application. Although the cost of DSP controlled digital power supply is higher than that of special analog controller, its price is decreasing and its performance is improving, so its advantages are more and more attractive. This is especially true for higher power with higher value products, in which case the system performance improvement is more obvious, and component cost is not the problem. In power supply design, digital signal processor (DSP) really needs to understand the stability of control loop in frequency domain and how to realize control loop in time domain with effective code, but these technologies have been understood, and mainstream power supply manufacturers are accepting this technology. While there is a need to invest in the skills and time to devel
The Solution of Power Adapter Heating
2020 / 04 / 21
1. Use switching components with small pressure drop and low loss, as well as the heat dissipation area should be as large as possible. The metal shell of the switching power supply above 100W generally has holes or has added a cooling fan. 2. The power adapter should be placed in a place with good ventilation and heat dissipation. Never place books or the like on the power supply. 3. When using the notebook in a high-temperature environment, the notebook power adapter should be placed in a place that is not exposed to direct sunlight and ventilation; do not place the power adapter near the heat dissipation vent, otherwise the power adapter not only will not dissipated the heat, but also absorb some heat.
What to do if the power supply is connected and not charged
2020 / 04 / 20
1. Right click the power icon and select the power option; 2. Randomly click a blue font to change the plan setting style 3. Find and change advanced power settings; 4. If it is 60% uncharged, it is OK to change the percentage of connected power with low battery power level to higher than 60%; 5. If 0% power is not charged, it needs to enter the battery management software for debugging and repair; 6. There is a problem with the computer hardware and the battery life is too short to be charged; or if it is not used for a long time, long press the power on button for 1 minute to release static electricity. Tips: the method needs to be determined according to different situations of different computers. Tips: experience is for reference only.
The Reason of Power Adapter Heating
2020 / 04 / 20
It is normal for the power adapter to generate heat. The conversion efficiency of the power adapter to the power supply can only reach about 75%-85%. During the voltage conversion, part of the energy is lost, most of which is emitted in the form of heat. The greater the power of the power adapter, the more energy is lost, and the greater the heat generated by the power supply. Therefore, the temperature of the case will be higher than the outside temperature.
2020 / 04 / 18
1. Industrial production equipment In many industrial industries, when the production equipment is working, the conventional voltage cannot be used. At this time, it is necessary to use a power adapter that can play a conversion role. And the computer LCD in our life also can not be separated from the power adapter in normal operation. 2. Electronic and digital products Electronic and digital products have flooded our lives. The use of mobile phones, tablet computers and notebook computers is gradually increasing. It can be said that the market development of electronic and digital products has driven the development of power adapter industry. As the basis of these electronic products, the function of power adapter is irreplaceable. There are also some security monitoring, medical equipment and so on. The power adapter is an indispensable part of our life.
Is the power adapter a switching power supply? What is the difference between the two
2020 / 04 / 17
The adapter is the Chinese translation of the English adapter / adapter. Adapter is an interface converter, which can be an independent hardware interface device, allowing hardware or electronic interface to connect with other hardware or electronic interface, or information interface. For example: power adapter, tripod base adapter, USB and serial port adapter. In a computer, the adapter is usually built into a card that can be inserted into a slot on the motherboard (or external)... The adapter information in the card exchanges with the devices supported by the processor and the adapter. Power adapter is a small portable electronic equipment and the power supply conversion equipment of electronic appliances. It is generally composed of shell, power transformer and rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection mode, it can be divided into plug-in type and desktop type. Because mobile PC has no battery, power adapter is very important to it. Most mobile PC power adapters can automatically detect 100-240V AC (50 / 60Hz). Basically, all Mobile PCs have external power supply, which is connected to the host with one line, so that the volume and weight of the host can be reduced. Only a few models have internal power supply. There is a nameplate on the power adapter, which indicates the power, input and output voltage, current and other indicators. Pay special attention to the range of input voltage, which is the so-called "travel power adapter". When MBeans are registered wi
Is The Power Adapter Universal?
2020 / 04 / 17
Power adapters of different specifications cannot be used universally. If it is to be universal, the following requirements must be met: 1. The voltage must be the same, otherwise it will burn the electrical appliances or will not work 2. The output current of the power adapter must be greater than the working current of the electrical appliance. Otherwise, the power adapter will burn out due to overcurrent 3. The interface between the power adapter and the consumer must match, otherwise it cannot be connected 4. The positive and negative polarities must be consistent
What is the difference between charger and ac/dc power adapter
2020 / 04 / 17
A charger usually refers to a device that converts alternating current into low-voltage direct current. It includes current-limiting and voltage-limiting control circuits that meet charging characteristics. The power adapter is a power converter that undergoes voltage transformation, rectification, and voltage regulation. The output is DC, which can be understood as a low-voltage stabilized power supply when the power is met. Let's talk about what is the power adapter? What is the charger? What is the relationship and difference between the two? A charger usually refers to a device that converts alternating current into low-voltage direct current. The charger is a special DC power supply for rechargeable batteries. It includes a control circuit that meets charging characteristics such as current limiting and voltage limiting. Power adapter. The common power adapter on the market is a power converter that undergoes transformation, rectification and voltage regulation. The output is DC, which can be understood as a low-voltage stabilized power supply when the power is met. The power adapter is widely used in routers, phone handsets, game consoles, language repeaters, walkmans, notebooks, mobile phones and other devices. Most power adapters can automatically detect 100-240V AC (50 / 60Hz). The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It externally connects the power supply and connects to the host with a line. This can reduce the size and weight of the host. Only a few devices and appliances have the power supply built into the host Inside. It is internally composed of power transformer and rectifier circuit, and can be divid
Should I unplug the wall charger before going out?
2020 / 04 / 16
In our daily life, many electrical appliances in our home need electricity. I do n`t know if you ever thought about this question: When you go out, do you want to unplug the power plug at home? I believe that many car owners and friends will be confused, but this little thing is closely related to our family safety, so we must pay attention. Speaking of water heaters, I can't help but think of Ms. Song, an owner who recently came to our house to install a second new house. During the chat, she said her son told her that the water heater is heated regularly and can be cleaned at any time. Hot water is available 24 hours a day. Don't unplug the power plug, so you don't have to waste electricity! As a result, there was no one at home in the first two days of thunderstorm. The motor burned out in an instant. Several designers laughed. Many people's mobile phone chargers and laptop adapters have not been unplugged, but is it safe? The wall charger not only consumes electricity, but also has a great safety hazard when it is turned on for a long time. There are many fires in the news caused by mobile phone chargers and wall adapters. Note: When leaving the room or not at home for a long time, unplug the charger; at the same time, use a good quality charger.
Can power adapters with different output currents be used universally?
2020 / 04 / 16
Mainly looking at the input, the standard voltage of China's mains electricity is 220 volts, so you can only use the adapters of input220VAC and output24VAC. The current 1000mA refers to the maximum output current, as long as the current required by the consumer is not greater than this value. 1.There is an important concept here: the output current of the power adapter is the maximum output capacity of the adapter, which is the power supply capacity of the adapter. 2.The replacement principle of the power adapter is: ①, the output voltage must be the same, otherwise, there will be a problem, or the load is burnt out; ②, the output current of the power adapter should be equal to or greater than the current of the original power supply. Provide sufficient power: ③, the positive and negative polarities of the interface must be consistent, otherwise the load will be burned. 3. The power supply adaptor 100-240V 50HZ output 9V ---- 3500MA, the power supply capacity is stronger than the original adapter power supply capacity, it can completely replace the 220 / 50HZ output 9V1000MA power adapter.
2020 / 04 / 16
1. DC output: DC cable can transfer switching power supply or transformer to other places via AC / DC current, such as LCD display, surveillance camera, notebook computer, device controller power supply. 2. Charging and transmission: You can use the DC cable to charge your mobile phones and digital cameras. Besides you can use it to transfer data.
Purpose and advantages of AC power adapter
2020 / 04 / 16
The power adapter is also called an external power supply. It is a small portable electronic device and an electronic appliance that provides a hundred-electric voltage conversion device. It is commonly used in small electronic products such as mobile phones, liquid crystal displays and notebook computers. It is composed of shell, transformer, inductance, capacitance, control IC, PCB board and other components. Its working principle is converted from AC input to DC output. It can protect some electrical equipment such as laptop computers, help the electrical equipment to dissipate heat, and provide stable voltage.
2020 / 04 / 14
1. Pay attention to moisture and dust. The port of the data cable has small metal pins. Because the maintenance work is not in place, water and dust run into the cable, which makes the data download speed slower, and more seriously, the data cable can not work. 2. Gentle insertion and removal. When the data cable has two interfaces to connect the mobile phone and the computer, because the interface pins are different, and they are very thin and easy to break during the plugging and unplugging process, so be careful when connecting. 3. Keep away from high temperature. The rubberized skin is destined to not withstand too high a temperature for a long time, and thermal expansion and contraction will accelerate the data line break.
How to delay the life of switching power supply
2020 / 04 / 14
①Method one: pulse power or overcurrent limit Switching power adapters developed in new products, one by one pulse of super power, current limit is essential, this one by one pulse of super power or current limit, in practical applications is a very effective output overload protection method and Additional secondary current limiting protection is often used in this technology. In previous switches, the input current was monitored in real time. If the current exceeds the specified limit current, the pulse will be terminated. In a flyback converter, the maximum current determines the power of the circuit. This type of protection circuit becomes a true power-limit protection circuit. ②Method 2: Ultra-power-off delay shutdown protection As a very effective output overload protection technology, ultra-power delayed shutdown protection technology has been widely used in domestic power adapter products. In the time-delay trip system, the requirement of short-term transient current is allowed. Only when the current stress exceeds the safe value for a long period of time, the power is turned off. The short-lived transient current will not endanger the reliability of the power supply, nor will it have a great impact on the cost of the power supply. Only long-term current requirements affect the cost and size of the circuit.
Send Inquiry
Ms. Sandy Lee
Tel:86-755-29002629-802
Fax:86-755-29002629-816
Mobile Phone:+8615813847832
Email:sales02@yidashun.com.cn
Address:6F,B3 in Jincheng Park, Huafan Road, Longhua District, Shenzhen, Guangdong
Related Products List
Mobile Site
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.