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Why is there a global chip shortage? The main reasons for the global chip shortage are the overall recovery of consumer demand, the serious situation of temporary orders from customers, the expansion of production capacity by smart cell phone manufacturers, and the large capacity gap of chip foundries. 1. Overall recovery of consumer demand Whether it is automotive consumer electronics, notebook computers, smart cell phone and other categories, there has been a rapid rebound. Global semiconductor materials have risen sharply, and foundries are basically fully loaded. The current production lines of TSMC, UMC and GF are facing great pressure. Rising prices and full foundries have directly raised the product prices of chip manufacturers. For example, chip suppliers have told all partners that the price of all products will rise. 2. The customer’s temporary order addition is serious. This year, the situation is quite special, and there is a big deviation between the market situation and the expectations of the merchants, which leads to serious customer orders in the later period. For example, in order to speed up the hoarding of goods before September 15, the number of orders placed by various chip manufacturers has increased sharply. In order to meet Huawei’s supply requirements, the number of orders placed by manufacturers to semiconductor material manufacturers has also increased sharply, which eventually led to the early release of the entire production capacity. 3. Smart cell phone manufacturers expand production capacity Next year is the key year for the full promotion of 5G smart phones, and various cell phone manufacturers are now gearing up to do a big job. So far, Xiaomi is expected to ship 300 million units, Honor is aiming to ship 100 million units, and Apple is aiming to ship 230 million iPhone units. The surge in shipments has put the entire market in a state of shortage of components. Global chip shortage hits cell phone and game console industries: In recent weeks, more and more industry leaders have warned that they can’t get enough chips to make their products, according to Wall Street News. Apple recently said sales of some of its new high-end iPhones were limited by component shortages. Both NXP and Infineon say these supply constraints are no longer limited to the automotive industry. Sony said on Wednesday that it may not be able to fully meet demand for its new game consoles in due to production bottlenecks.

The direct impact is the conductivity of the product. In fact, there is no problem. When you sell the product, you can divide it into a high/low end, such as high-end, low-end 3A. Customers can choose the product according to their own requirements. Some power customers need high-end large current, and some industrial control customers may choose low-end small current. Pure copper terminal: What is the name of the large pure copper terminal used for high-current wiring? It is called a high-current terminal, model JXP-10/, and the pure copper is the connecting piece, as shown in the bottom figure. Pure copper terminals: What is the difference between copper-aluminum terminals and copper-aluminum transition clamps? Pure copper terminals: What is the difference between brass and copper cold-pressed insulated terminals? Red copper is a kind of relatively pure copper, which can be approximately regarded as pure copper. It has good conductivity and plasticity, but poor strength and hardness. Brass is a kind of copper with other alloy components, which is cheaper than copper, less conductive and plastic than copper, but stronger and harder. In industry and civil use, different materials are selected according to different characteristics of use, which one is better can not be generalized. If make electric wire, the requirement is softer, red copper is better. If you are making a connector, the place where the screw is screwed should be brass. Red copper is pure copper, the texture is much softer, the contact must be tighter, and the conductivity is also good. As for the price, I don’t know. Pure Copper Terminals: Solid State Relay External Pure Copper Terminal Output Benefits? All copper terminals are used for output, and the current resistance is smaller. Conductive good, can reach the power output, long-term use does not heat.

The main direction of electronic information engineering is the control and processing of small signals, so analog electronics is very important. Counting electricity is just to develop your sequential logic ability, and you will not use the content in the textbook in practice. The steps of circuit design should be: 1. Understand the design requirements and clear the design tasks; 2. Put forward the design ideas and schemes; 3. Build the circuit module according to the scheme and draw the circuit diagram; 4. Verify the scheme through calculation and experiment. If you have no idea about the design of the circuit, it means that your knowledge of analog electronics is too weak. Generally speaking, when you get the design requirements, you should have a general idea, such as some basic modules used in the processing process, amplification, filtering, shaping, comparison and so on. So you need to look at some of the more applicable circuits in the model book, and write down the commonly used ones, and use them as signal processing modules. Others, such as single-chip computers, sensors and special function chips, depend on experience and do more things by hand to broaden their horizons. If you want to quickly master the method of circuit design, I suggest you look at the book of college students’electronic competition, which can provide a lot of design ideas, and ideas are very important. Circuit Design of National Undergraduate Electronic Design Competition, author: Huang Zhiwei, publisher: Beijing University of Aeronautics and Astronautics Press Circuit design: Circuit design starts from 0 The order of study is: Fundamentals of Circuits-Analog Electronics-Digital Electronics At the same time, it is better to have a higher mathematics as a reference, and integral transformation is also needed. The robot needs programming technology, and it needs to learn the language design of single chip microcomputer. All of the above books can be found by yourself or at the above website.

How about the Bailiyuan Charger? Charger as far as possible to choose their own cell phone original, if you you if your original is sent very slowly, you can consider, change a system with your matching model matching flash charger, do not go to buy some other chargers, because the resistance of the charging head is different, will affect the voltage and current there are some relationships that affect the life of the cell phone battery. A good charger: what kind of charger is good The charger must be the original charger, only the original charger is completely designed according to the actual situation of the battery and cell phone, its output voltage and current are perfectly matched with the cell phone. Good charger: What is the best brand of charger? What is the best brand of charger? Of course, the charging head that supports fast charging is even better, so today I will share with you some of the most cost-effective charging head brands. 1. Nank South Card Charging Head C1 Nank South Card Charging Head C1 is a super hot cell phone charger recently. In order to change the phenomenon of heavy, big, ugly and slow charging of traditional chargers, Nank South Card Charging Head C1 has gone through more than 60 product polishing processes from material selection, cutting, shaping and grinding to create a unique thin and compact body with high power and fast charging. Fast charging compatible with Apple and Android cell phones. Its compact and thin design is smaller than the ordinary 5 W charger, and Mini’s stature has been evaluated as “the smallest charger brand” by major technology media. The practicality and safety of Nank South Card Charging Head C1 are highly praised in the industry. It is made of PD environmental protection material with excellent insulation, and has good fire resistance, flame retardant and high temperature resistance. And is through the military level of security certification, joined the intelligent temperature control chip security protection, always low temperature charging state, good protection of cell phone and charger charging safety. In addition to practicality and safety, the appearance of Nank South Card Charging Head C1 has also received unanimous praise from many netizens. It innovatively integrates the plug side orientation storage design, and the 90 ° design is also very convenient for travel. This also broke the saying that many netizens complained that the fast charger was bulky, and was rated as “the most compact brand of fast charger” by the well-known technology media! 2. Anke charger The Anker NanoPD charger is still the same size as Apple’s original 5 W charger, but it supports a strong output power, which can get three times the charging speed on models above the iPhone 8. Comparison of charging speed

What is the difference between high voltage power supply and electrostatic electret high voltage power supply? The main differences are as follows: For the concepts of high voltage and low voltage, strong electricity and weak electricity, in the “electricity” industry, there are many kinds of statements, which often make the definition of high voltage and low voltage vague. According to the provisions of the past national industry standard “Electric Industry Safety Work Regulations”: “Electrical equipment is divided into two types: high voltage electrical equipment: above the ground voltage; Low-voltage electrical equipment: voltage to ground and below. According to the new State Grid Corporation of China (SGCC) enterprise standard “Electric Safety Work Regulations”, “Electrical work is divided into two types: high voltage and low voltage: high voltage electrical equipment: voltage level and above; low voltage electrical equipment: voltage level below; Although the two have different opinions, in fact, they are almost the same. The national industry standard refers to the ground voltage, that is, the phase voltage, while the enterprise standard of Guodian Corporation refers to the line voltage. There are only a few voltage levels in our country, which are actually the same. Strong electricity and weak electricity. Mainly from the power transmission, power replacement, cost, equipment voltage and safety factors to consider! The main difference is the level of voltage, usually and above the voltage are high voltage! The rest is low pressure! High pressure is usually used in industrial factories, mines and large enterprises. This is to prevent the invasion of static electricity from the high voltage. In fact, the negative electrode and the positive electrode have a certain resistance value. In case of static electricity, it will flow into the positive electrode with the negative electrode, that is, it can directly enter the ground. If it is a positive high-voltage power supply, static electricity is injected with the positive pole, it can not be injected into the ground but directly into various components. Miniature high voltage power supply is a power supply that can produce the above high voltage, which usually has boost coil, oscillation circuit, protection circuit, rectifier circuit and so on. Switching power supplies generally output between 5-more, they are AC power into DC power. Microstar high-voltage power supply, you look for it on the Internet, it is not your electric mosquito swatter is a high-voltage power supply, you can imitate its circuit down. Cable test high voltage power supply, here to provide technical parameters for your reference. 1. DC high voltage output:. Impulse high pressure: 0 ~ continuously adjustable 3. External capacitor: 1 × 8 μF 4. Impact time: 2 to 6 seconds 5. Maximum pulse energy: ~ 6. Maximum output current: 7. Voltage indication error: ± 2% 8. Supply voltage: 9. Ambient temperature: -10 ℃ ~ + 50 ℃ 10. Volume: × ×. Weighs only 7 kg

Car Voltage: What is the car voltage? A car battery, also known as a storage battery, is a type of battery that is normally between 11.8 V and 12.8 V. 1. The no-load voltage of the battery should be about 13 volts, and it is normal if the load voltage is not lower than 11 volts. If the voltage is lower than 11 volts, it may be difficult to start. After starting, because the generator starts to generate electricity, the voltage of the 12 volt vehicle system should be between 13.5 and 14.5. 2. The 24V vehicle is between 27V and 29V. After starting, the generator voltage is measured. Since the battery and the generator work in parallel, the battery voltage cannot be measured at this time. The car battery is an important part of the car and can not be used for lighting. The function of the automobile battery is to supply power to the starter, and to supply power to the engine ignition system and other electrical equipment when the engine starts or runs at low speed. When the engine runs at high speed, the generator generates enough electricity, and the on-board charger automatically stores excess electricity for the vehicle battery. If the battery is not used for a long time, it is better to start it for 5 minutes every other week to charge the battery to avoid deficit. 1. The battery is charged by the generator when the vehicle is running normally, but the vehicle will easily run out of power after parking for a long time, because many vehicles have their own alarms, and the alarms will slowly consume the power in the battery after parking for a long time, which will cause the vehicle to be unable to start over time. 2. When the vehicle is parked for a long time, it is better to start the vehicle every other week for more than 5 minutes to charge the battery. In addition, when the vehicle is parked for a long time, it is suggested that the owner remove the negative pole of the battery to avoid the power deficit of the vehicle battery. 3. Batteries are most afraid of low temperature. In low temperature environment, the capacity of batteries is much lower than that at normal temperature. Therefore, we should check and maintain it in time. In our daily life, we should pay attention to the fact that the car battery should be charged frequently. If the battery is not used for a long time, it will discharge slowly until it is scrapped. Therefore, the car should be started every once in a while to charge the battery.

Fast charging: how to set up fast charging

1. First, connect the cell phone charger to the cell phone and the power supply. The charging sign will be displayed in the power option on the upper right. The cell phone is connected to the power supply for continuous charging. When it is fully charged, the indicator light will turn green.

2. Lock the screen of the cell phone and then click the power button, and it will display whether the cell phone is currently in the fast charging state. If it does not display the fast charging state, it is recommended to use the original data cable.

3. Click to open the setting options of the DC-DC converter, find the battery and power saving options, and you can see the time required to fully charge the current cell phone battery. The power consumption information of different applications can be seen below. 4. Then open the cell phone manager that comes with the cell phone, click the search tool option, enter the fast charging keyword to find the tool, and then click Open to see the current cell phone battery situation. 5. To better optimize the power consumption of the application, click the permission management below. The unnecessary software can be closed and started automatically. The software can be opened when needed to clean up the background operation in time.

6. Click the 100% power option at the bottom to display the percentage of the current remaining power at the top. Click it again to close the display and choose whether to open it or not according to your usage habits. 7. When the battery of the cell phone is low, you can click to turn on the super power-saving mode, and the data and wireless connection will be turned off by default, so as to save the power of the cell phone to the greatest extent and improve the standby time.

Fast charging: fast charging DC-DC converter for electric vehicle fast charging station Four-way cabinet type fast charging station The charging station is a convenient service facility suitable for shopping malls, newspaper kiosks, convenience stores, electric vehicle maintenance departments and battery maintenance departments. Public facilities, low power consumption, high returns. Product Name: Four-way Cabinet-type Fast Charging Station Product model: SY-CD-80-10-L1-4-B Charging mode: Coin mode Market price: RMB/set Size: * * Material: full metal shell, plastic spraying process Technical parameters: Applicable voltage- () Output voltage// Maximum power No-load power 3-5 W Electrically large current Operating temperature -10 ℃ — 40 ℃ The output line is 3 meters long Product features: 1 Automatic inspection and identification of positive and negative electrodes 2 Automatic battery voltage identification 3. Charging, detection and voice prompt in the whole process Intelligent intermittent pulse charging, which can repair the battery 5 Automatically detect whether the battery is good or bad • Automatically switch to intelligent charging Operation Guide 1. Plug in the power plug; 2. Turn on the power switch on the bottom of the chassis (the switch light is on

Unmanned aerial vehicle power supply Drone Power Supply: How does the drone strike supply power? Built-in high-capacity battery ensures long standby time, and two batteries can be replaced at any time. UAV power supply: how to calculate the voltage of the UAV battery in seconds?

One second is a battery cell, which is 3.7 V, and several seconds refers to the number of batteries in series. Portable devices that require high power in series are typically powered by a battery pack of two or more batteries connected in series. If a high voltage DC-DC converter is used, the size of the conductor and the switch can be made small. Another problem with using battery packs is the possibility that one of the batteries in the battery pack will fail.

It’s like a chain, and the more batteries you have in series, the higher the chance of this happening. As long as there is a problem with one battery, its voltage will drop. In the end, a “disconnected” battery may interrupt the delivery of current. It is not easy to replace the “bad” battery. Precautions for battery series connection (1) DC-DC converters of the same manufacturer, model and batch should be selected to ensure the consistency of various performances among batteries, and single batteries should be selected as far as possible. In the process of use and maintenance, the relevant data of each battery can be easily observed. It is forbidden to use batteries of different manufacturers, different models, different types, different capacities, different performances and different degrees of age in series or in parallel. Batteries with inconsistent performances are not easy to maintain and will affect the life of batteries. (2) It is better to connect the batteries in series. Appropriate DC-DC converters should be selected and then connected in series to form a battery pack. In general, only batteries with a capacity of more than.h can be connected in parallel. (3) Installation position The battery should be placed in a ventilated, dry place away from heat sources and in a place where sparks are not easy to occur. The batteries should not be placed too densely. At least a distance should be kept between single batteries.

A rectifier is a device that converts alternating current into direct current. It can be used to power devices and detect radio signals. Rectifiers may be made of vacuum tubes, igniters, solid state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current into alternating current is called an inverter. In the standby UPS, only the battery needs to be charged, and the load does not need to be supplied with power, so there is only a charger. In the double conversion UPS, this device not only supplies power to the inverter, but also charges the battery, so it is called rectifier/charger. A rectifier is a rectifying device that simply converts alternating current (AC) to direct current (DC). It has two main functions: first, it converts alternating current (AC) into direct current (DC) and supplies it to the load after filtering, or to the inverter; second, it provides charging voltage for the battery. Therefore, it also acts as a charger. Rectifiers: differences between rectifiers and transformers First of all, we need to clarify their respective concepts before we can distinguish them. 1. Transformers, Narrow concept: The concept of power transformer is that it can convert alternating energy of one specification into alternating energy of another specification through electromagnetic coupling, such as the conversion of voltage and current, but in any case, energy is conserved; Generalized concept: Any device capable of voltage transformation can become a transformer; for example, switching power supply, resistor step-down, three-terminal voltage regulator, etc; 2. Rectification, Rectification is the process of converting an alternating signal into a direct current signal, and a rectifier is a device that can convert an alternating signal into a direct current signal; 3. And then look at the difference, The rectifier, as mentioned above, converts an AC signal into a DC signal; For example, a rectifier (rectifier bridge) may be used to convert mains AC to DC; Rectifier transformers can also perform voltage conversion after “converting AC to DC”, for example, they can reduce the rectified voltage to 5V, 9V, or boost it to,, or other desired voltages. Of course, the transformer here should be understood in a broad sense, because the voltage has been rectified to DC voltage.

DC converter DC converter: What is the name of a device that converts alternating current to direct current? A device that converts alternating current into direct current is a rectifier. Rectifiers are devices that convert alternating current into direct current, which can be used to power devices and detect radio signals. Rectifiers may be made of vacuum tubes, igniters, solid state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current into alternating current is called an “inverter”. A rectifier is a rectifying device that simply converts alternating current (AC) to direct current (DC). It has two main functions: (1) converting alternating current (AC) into direct current (DC), and supplying the direct current to a load or an inverter after filtering; (2) Provide charging voltage to the battery. Therefore, it also acts as a charger. The simplest of the rectifier categories is the diode rectifier. In its simplest form, the diode rectifier does not provide any means of controlling the magnitude of the output current and voltage. In order to be suitable for industrial processes, the output value must be controllable within a certain range. This control can be accomplished by applying a mechanical so-called on-load tap changer. Typically, on-load tap changers control the input AC voltage at the primary side of the rectifier transformer, and therefore the output DC value can be controlled within a certain range. On-load tap changers are usually used in combination with a saturable reactor in series with the rectifier output circuit. By introducing a direct current into the reactor, a variable impedance is created in the line. Therefore, by controlling the voltage drop across the reactor, the output value can be controlled within a relatively narrow range.