Single-sided and double-sided printed circuit board electronic welding
The processing of printed circuit boards is a more complicated process. The following is the content of the single-sided and double-sided printed circuit boards: ** 1. The process of copying a printed circuit board ** 1. ** Preparing Work ** - For a single-sided and double-sided printed circuit board, the original circuit board must first be analyzed. Confirm the type of circuit board (single-sided or double-sided), the number of layers, and other basic information. - Prepare a board removal tool to remove the electronic components on the printed circuit board. 2. ** Removing components and recording information ** - Carefully remove the electronic components on the original printed circuit board. During the removal process, record the detailed location, model number, and other information of the components to form a bill of materials. This step was very important for the subsequent component purchases and the accurate restoration of the circuit board. 3. ** Empty board processing ** - The empty board after the components were removed was scanned. For single-sided and double-sided PCs, it was scanned into a picture and then processed by the copying software to restore it to a printed circuit board drawing file. A single-sided printed circuit board was relatively simple, and its circuit layout was only on one side, while a double-sided printed circuit board needed to accurately handle the circuit connection relationship on both sides. 4. ** Processing and making of printed circuit boards ** - Check and modify the restored printed circuit board file according to the actual needs (if necessary), and then send the printed circuit board file to the processing plant. - In the process of making a board, for a single-sided printed circuit board, it mainly involves cutting the appropriate board, drilling (if necessary), and performing the necessary plating and engraving to form the circuit pattern. In addition to these basic steps, the double-sided circuit also needs to pay special attention to the connection of the two-sided circuit, such as the correct transmission of signals through the via. 5. ** Purchasing of components and preparation for welding ** - Purchasing the required components according to the previously recorded BOMs and ensuring that they have the required technical indicators and quality certification. - Prepare the welding materials, such as welding paste, pads, etc., and ensure that the surface of the printed circuit board is clean, flat, free of impurities and defects. For double-sided printed circuit boards, check the state of both sides. 6. ** Welding Technique ** - ** Single-sided printed circuit board welding **: Solder the purchased electronic components to the single-sided printed circuit board according to the recorded positions. During welding, pay attention to the connection quality between the pins and the pads of the components to ensure the fullness of the welding. The welding spots must have an appropriate size and shape to ensure sufficient contact with the pins and pads of the components. At the same time, the amount of tin paste must be controlled to avoid problems such as insufficient welding or short circuit caused by too much. - ** Double-sided printed circuit board welding **: The welding of double-sided printed circuit boards is relatively complicated. First, the components on one side were to be bonded. When this side was bonded, care must be taken to avoid affecting the circuit on the other side. After the welding and inspection of one side was completed, the other side should be welding. The relevant requirements for the quality of the welding should also be followed, and the installation and welding of the components on both sides should meet the design requirements to ensure the normal electrical performance. 7. ** Testing and Testing ** - After the welding was completed, the single-sided and double-sided printed circuit board was tested and debugged to check whether it achieved the expected function, including electrical performance tests (such as insulation resistance test, current and voltage test, etc.) and functional tests to ensure that there were no short-circuits, open circuits, etc., and the components were working normally. Read more exciting novels for free
Is the TV single-sided or double-sided
Usually, the TV was single-sided. The screen was only used to display images and play video content on one side, and the back was mainly used to connect various ports and place circuit components. However, with the development of technology, there may be special designs or concepts of double-sided display TV, but this is not the type of TV that is commonly seen in the traditional sense. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Ocs single-sided display electronic hanging scale
The OCS single-sided display electronic hanging scale was a type of electronic hanging scale. In terms of price, the prices of OCS single-sided display electronic hanging scales of different manufacturers and different specifications were different. For example, the wholesale price of 500kg OCS single-sided display LED digital hanging scale in Chuzhou City was 134.0 yuan, and the price of OSC-CZ wireless remote control hanging scale (1T-10T) in Changshu City was 1235.0 yuan. It had the following characteristics: 1. ** The display type is related **: There are two types of display: LED (suitable for indoor use) and LCD (suitable for outdoor use in the sun). The LCD type has a built-in backlight, and it can clearly display in a dark environment. 2. ** In terms of performance ** - It has good dynamic weighing performance, and the shaking of heavy objects will not affect the weighing results. - High integration, high reliability, internal resolution up to 1,000,000, bringing high precision and stability. - It has an automatic power-off function that can automatically record the last 13 weighing records without being affected by power failure. 3. ** Function expansion **: It can be equipped with a wireless remote control for convenient operation, a wireless display instrument, and a wireless data transmission distance of up to 200 meters. It can make the hanging scale have the advantages of both a direct view hanging scale and a wireless hanging scale. It can also be equipped with high-temperature heat insulation and anti-corrosion types. In terms of structural composition, it was generally composed of a mechanical bearing mechanism, a weighing sensor, an A/D conversion board, a power supply, a wireless transmitting and receiving device, and a weighing display instrument. Its working principle was that when the hook was hung on an item, the sensor in the scale would be deformed by the tension, and the current in the sensor would change. After A/D conversion, it would send out a radio signal through the transmitter, and the receiver would receive the signal and transmit it to the instrument. After the instrument converted and calculated, it would display it. In terms of usage: 1. The battery should be installed before use. Pay attention to the details related to the battery installation, such as tightening the locking screw of the battery clip. When the meter shows that the battery is under-voltage, replace the battery and charge it in time. The battery should be charged regularly and stored properly if it is not used for a long time. 2. It was necessary to avoid violent pulling and collision, because the internal electronic components were easy to be damaged due to collision, which would affect the accuracy and normal use. The instrument should also be handled gently. 3. Do not disassemble parts at will, and necessary repairs must be carried out under the guidance of professionals. 4. During daily use, pay attention to check whether the screws, bolts, and circlips of each part are loose or fall off to avoid violent impact and long-term rain. There are special requirements when working in high-temperature environments, and it is forbidden to overload to avoid damage to the sensor. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Double-sided embroidery
Double-sided embroidery was also known as double-sided embroidery. It was one of China's outstanding traditional crafts. It was mostly reflected in the works of China's four famous embroidery (Xiang embroidery, Su embroidery, Yue embroidery, and Shu embroidery). It had a long history and had existed as early as the Tang Dynasty. In the Qing Dynasty, double-sided embroidery with good craftsmanship and excellent embroidery skills appeared. However, there were not many of them at that time, and there were even fewer technical and artistic works. After 1949, double-sided embroidery had more innovative developments. For example, Su embroidery created double-sided embroidery, double-sided foreign object embroidery, double-sided three-different embroidery, and completely different double-sided embroidery. Its artistic expression was pushed to a new height. In 2006, double-sided embroidery was included in the first batch of national intangible cultural heritage protection list. Double-sided embroidery could be classified into square outer and circular inner structure, table screen structure, circular structure, and egg-shaped structure according to the frame; according to the size, it could be divided into 30-circle diameter, 20-circle diameter, size-multiplied, and square. The unique feature of this technique was that on the same base material, the front and back images were embroidered in the same embroidery process. The outlines were exactly the same, and the patterns were equally exquisite, just like sculptures. For example, the double-sided three-color embroidery in Su embroidery could allow two people to sit opposite each other and embroider two different patterns, different stitches, and different colors on the same piece of embroidery. There was also double-sided different-color embroidery, which could embroider two identical patterns but different colors on the same piece of cloth with the same stitches. "Palace Wall Flower Shadow: The Legendary Life of the Mute Embroidery Girl" was equally exciting. Everyone was welcome to click and read it!
Similar to Double-sided Manipulation
Gilded paper, double-sided
In the reference materials, it was mentioned that the gold-plated opening flower basket paper was red on one side and gold on the other. There were two styles: Prosperous Business and Lucky Opening. The gold-plated opening flower basket paper was double-sided waterproof and could be used as a flower wrapping material in a flower shop. The price was 4.30 - 9.80 (3 pieces). However, there was no more detailed information about the two sides of the gilded paper. For example, other than the color, usage, and price, there was no way to answer accurately. The novel "Gilded Palm" is equally exciting. Everyone is welcome to click and read it!
Double-sided tape for TV series
The TV series " Double-Sided Glue " was a modern urban drama about family disputes and marital conflicts that was broadcast in 2016. The drama was starred by actors Hai Qing, Zhang Guoli and others. It told the story of the heroine, Hai Zao, and her husband, Hai Zao's father, as well as the story of Hai Zao and her good friend, Hai Ping. The drama had achieved high ratings and reputation in mainland China, becoming a popular urban emotional drama.
Double-sided paranoia novel recommendation
Here are some recommendations for bigoted novels: 1. "Unarmor" Author: Snow Hachi: This novel is rated as a five-star, so it might be a good choice. 2. "A Kiss for the Paranoid Man (Quick Wear)" Aoki Yamari: This novel is about a paranoid and crazy male supporting role. It might fit your needs. 3. Not the Wind: The Whole World Is Waiting for Us to Break Up: This novel has a paranoid male protagonist. He is very possessive and may attract your interest. 4. "The Beauty of Chong Xi VS the Traitor": This novel is about a story between a paranoid and gloomy powerful official and a gentle little beauty. It might be your type. 5. "My Crazy Lover" Author: Bright Lights: This novel has two male protagonists, one of whom is a paranoid and sickly character. You may be interested in this story. I hope these recommendations will meet your needs.
Double-sided tape TV series
Double-Sided Glue was a 22-episode Chinese drama directed by Teng Huatao and starred by Hai Qing, Tu Songyan, Pan Hong, etc. The drama told the story of a Shanghai girl, Li Juan, who married a northeastern man, Yaping. Yaping's traditional ideas and Li Juan's modern lifestyle conflicted, resulting in tension between the mother-in-law and daughter-in-law. Eventually, the family turned against each other. The ending of the play was that Li Juan and Yaping reconciled. After her mother-in-law died, the three of them lived together again. The drama was adapted from the online novel of the same name. Double-Sided Glue received a strong response after its broadcast, and a sequel was filmed.
Double-sided novel copywriting recommendation
The following are the copywriting recommendations for a few double-sided novels: 1. " All-rounded Strategy Game [Quick Wear]": Jiang Li was accidentally bound to the " All-rounded Strategy Game " system. After starting the strategy, he found that the male protagonist was angry every day. This was a sweet novel that focused on love. 2. " Self-cultivation of a Tool Man [Quick Wear]": This novel tells the story of a male protagonist who plays various roles in the Quick Wear world. His task is to help the female protagonist complete her mission. The male protagonist in the story had a two-faced personality. He was gentle, considerate, and cold. 3. In this ancient martial arts novel, the male and female protagonists were powerful characters with two sides. The female lead was nicknamed " Bi Yao " while the male lead was nicknamed " Banished Immortal." A story full of black-bellied enemies unfolded between them. 4. " My Double-Faced CEO Wife ": This was a novel about urban life. It told the story of a male protagonist who had a double identity. He was a successful president and a gentle and considerate husband. These novels all had two-faced characters and rich storylines. They were suitable for readers who liked this kind of genre.
Double-sided forensic science novel
He recommended a few novels. " Three-Eyed Forensic " was a supernatural novel written by Mu Yi. It was about a small forensic doctor solving a strange case. The case was solved by forensic knowledge, and the pursuit of girls relied on superpowers, but the result might be unexpected. Book group 45350704. Hogwarts Summoning Guide, Bai Linshuo's work, fantasy epic. Bai Lin saved the little girl and traveled to the Wizarding World in 1993, becoming a magical creature researcher and undercover. There were also a group of characters such as Harry and Catherine, each with their own characteristics and stories. " Stop, this is not a proper science novel." It was a sci-fi space-time travel novel written by a happy fat otaku. Ye Zhen transmigrated to the television station as an intern and awakened the science system, revealing shocking secrets from all kinds of strange things. " Sin is Unforgivable " was Moile's mystery detective novel. It was the second in the " Sin " series. The case was rigorous and the emotional lines were relaxed. There were characters like Congo and Yan Xue. " You just joined the army and you've already achieved first-class merit. You call this a recruit?" In the military life novel written by Student Liang, Zheng Feng transmigrated to become a recruit. He saved people and awakened the system to obtain the dragon skill, becoming a recruit legend. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>