在設計印製電路板圖時應注意以下幾點
1. 接線方向:從焊接表面的角度, 部件的佈置應盡可能與示意圖一致. 接線方向最好與電路圖的接線方向一致. 因為在生產過程中,通常在焊接表面上測試各種參數, 這樣便於檢查, debugging 和 maintenance during production (Note: It refers to the premise that the circuit performance and the installation and panel layout requirements of the whole machine are met).
2. 部件的佈置和分佈應合理、均勻, 努力做到整潔, 美麗的, 結構嚴謹.
3. Resistor and diode placement methods: there are two types: horizontal placement and vertical placement:
(1) Horizontal placement: When the number of circuit components is small and the size of the circuit board is large, 通常最好使用水准放置; 對於低於1的電阻器/4W, 兩個襯墊之間的距離一般取4/10英寸, 當1/2W電阻器平放, 兩個襯墊之間的距離通常為5/10英寸; 當二極體放平時, 1N400X系列整流管, 一般取3/10英寸; 1N540X系列整流管, 一般需要4到5分鐘/10英寸.
(2) Vertical installation: When there are a large number of circuit components and the size of the circuit board is small, 一般採用垂直安裝, 兩個襯墊之間的距離通常為1到2/垂直安裝10英寸.
4. Potentiometer: the placement principle of IC holder
(1) Potentiometer: It is used in the regulator to adjust the output voltage, 囙此,當輸出電壓升高時,應順時針完全調整設計電位計, 逆時針調節器的輸出電壓隨著輸出電壓的降低而降低; 在可調恒流充電器中,中間電位計用於調整充電電流的大小. 設計電位計時, 當電位計順時針完全調整時,電流將新增. 電位計應放置在裝置的位置上,以滿足整機結構安裝和面板佈局的要求, 囙此,應盡可能將其放置在電路板邊緣, 旋轉手柄朝外.
(2) IC holder: When designing the PCB印製板 簡圖, 使用IC支架時, 務必特別注意IC支架上定位槽的方向是否正確, 並注意每個IC引脚是否正確, 例如, 第一個針腳只能使用. 它位於IC插座的右下角或左上角, and is close to the positioning groove (viewed from the welding surface).
5. Arrangement of in and out terminals
(1) The distance between the two associated lead ends should not be too large, 一般在2到3之間/10英寸更合適.
(2) The inlet and outlet ends should be concentrated on one or two sides as much as possible, 不應該太離散.
6. 在設計接線圖時,請注意引脚排列順序, 元件引脚間距應合理.
7. 在保證電路效能要求的前提下, 設計應力求合理佈線, 使用更少的外部跳線, 並根據一定的平滑充電要求佈線, 努力做到直觀, 易於安裝, 高度和檢修.
8 設計接線圖時, 接線應盡可能少以彎曲, 線條應該簡單明瞭.
9. 接線條的寬度和線路的間距應適中, and the spacing between the two pads of the capacitor should be as consistent as possible with the spacing of the capacitor lead pins;
10. 設計應按一定順序進行, 例如, it can be carried out in the order from left to right and top to bottom
The above is the introduction of the main points of attention in the design of printed board diagrams. Ipcb也提供給 PCB製造商 and PCB製造 科技.