ピー、ピー、ピー、車のクラクションを1回、2回、3回鳴らすための秘密の言葉は何ですか？
According to statistics from the China Communications Bureau in June 2019, China’s car ownership has now exceeded 280 million. In the face of such a large number of cars, the regulatory pressure on the transportation sector is also very high, and cars are mobile objects. It brings difficulties to traffic police, so traffic accidents frequently occur. According to the analysis of relevant experts’ data, there are several major characteristics of traffic accidents in China. One is the weak awareness of traffic regulations, the second is the proliferation of personal heroism, and the third is due to road or It is the impact of natural disasters. The fourth is the driver […]
コーン（ペーパーコーンとも呼ばれる）は、スピーカーの重要なコンポーネントの 1 つです。
When an audio signal is input to the speaker, the voice coil vibrates in the magnetic field. Because the voice coil is fixed on the paper cone, the paper cone will vibrate along with it. The vibration of the paper cone forces the air to resonate, making a sound. Therefore, different sound basin materials will produce different sound quality effects. The following is a list of common cone materials, and the main characteristics of each material cone. Speaker classification The materials used in the tweeter and woofer cones are different. Treble unit is divided into hard dome, soft dome and composite unit Hard dome diaphragms are made of light metals […]
日本の車のクラクションは鋭い音がしますが、ヨーロッパやアメリカの車のクラクションは鈍くて太い音がします。どちらが良いですか?
The car whistle sounds a beep and a beep. In addition, Japanese car horns are mostly dip and the sound is sharp. Most European and American car horns are beeping, dull and louder. Why is that? Which speaker is better? First of all, car horns are divided into electric horns and air horns. Generally, large cars will use louder air horns, while cars will use electric horns, and electric horns are divided into snail horns and basin horns. The most common pot-type speakers are small, cheaper, and have a stronger penetration of the dripping sound. Japanese and Korean cars are more versatile. The snail horn, which looks like a snail, […]
会社の視点としては、電子部品を購入して自ら PCBA を作るのか、それとも PCBA を行う会社を直接探すのか?
First, first look at your company’s product needs and your own supply chain situation. If the supply chain you add is very good, it is usually purchased by yourself. So you know the cost and price Second, if your own strength is product development, not the supply chain, it is still recommended to directly find a PCBA direct contract labor and materials, so that you can relax. Can save time and other issues. The second is currently the most on the market, and there are suitable PCBA manufacturers to contract work and materials. Hard City is a one-stop BOM procurement service dedicated to PCBA factories. Can quickly provide quotes for […]
PCBA 製造会社にとって R & D はどれほど重要ですか?
New developments require more complex, larger PCBA and tighter packaging. These requirements challenge our ability to build and test these units. Further, larger boards with smaller components and higher node counts may continue. For example, a design that is currently drawing a circuit board diagram has approximately 116,000 nodes, more than 5,100 components, and more than 37,800 solder joints that require testing or confirmation. This unit also has BGA on top and bottom, BGA is next. Using traditional needle beds to test this size and complexity board, an ICT approach is not possible. Increasing PCBA complexity and density is not a new issue in manufacturing processes, especially during testing. Realizing […]
PCB 回路基板、PCBA 回路基板とは何ですか、この 2 つにはどのような違いがありますか?
PCB board refers to the light board that only needs to be manufactured and has no parts. PCBA refers to PCBs that have electronic components, parts on the PCB board, and functional circuit boards after SMT. Our common circuit boards are PCBA. PCB boards can only be seen during the original processing of the manufacturer. The picture is the PCBA board
PCBA の偽はんだ付けとダミーはんだ付けの違いは何ですか?
偽溶接とは、はんだ接合部の表面の溶接は成功しているように見えても、実際には溶接されていない状態を指します。場合によっては、一度引っ張るだけでリード線がはんだ接合部から抜けてしまうことがあります。また、仮想はんだとは、はんだ接合部に少量のはんだ柱が残っている状態です。接触不良や断続的なオンオフを引き起こします。偽はんだ付けとダミーはんだ付けについて私が理解しているのは、ダミーはんだ付けは実際にはんだ付けされておらず、デバイスが使用できないということです。一方、ダミーはんだ付けは信頼できるはんだ付けではなく、接触不良には良い状況と悪い状況があります。.
深センの PCBA 処理見積りはどのように計算されますか?
深センPCBA加工の見積りはどのように算出されますか？深センPCBA加工の見積りは、以下の項目に基づいて算出されます。通常のはんだ接合費用、DIPはんだ接合費用、手はんだ接合費用、粘着テープ費用、人件費、洗浄費用、梱包費用、輸送費、包括費用、そして利益となるべきものを加算してPCBAの見積り総額が算出されます。PCBAは、PCBの空板からSMT実装、そしてDIPプラグインまでの全工程を含み、PCBAと呼ばれます。プリント回路基板（PCB）は、英語の略語でPCBと呼ばれることが多く、重要な電子部品、電子部品の支持部、そして電子部品の配線接続部を提供します。電子印刷によって製造されます。[…]
深センのPCBAメーカーは技術者のミスで多数の不良品が発生し、数百万ドルの損失が発生したと訴えている。
Recently, a circuit board manufacturer in Shenzhen complained that the PCBA boards produced in the workshop were almost full of production lines. The reason was that a lot of bubbles appeared in the tin spots on the recently processed PCBA circuit boards due to errors in the operation of the technicians. The customer received the goods. After the product inspection found defective products, all returned. Because the circuit board manufacturer does not have non-destructive testing equipment, it is impossible to determine which PCBA is good and which is defective. Later, a friend introduced Zhuomao Optoelectronics Technology. After understanding the manufacturer’s confusion, Zhuomao Optoelectronics invited some PCBA boards to come over […]