汽车音响开关PCB板设计

汽车音响开关PCB板设计 项目名称 绘制汽车音响开关电源原理图和PCB板 项目负责人 院(系)名称 电气及其自动化 专业年级 填写日期 2011年12月11日 regularly, neat in appearance, the main-beam with small harness line must be smooth transition, small wire harness tied to main beam should be at a 90-degree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors should 一、 设计任务 1. 制作、修改原理图元件 2. 绘制原理图 3. 制作、修改PCB库中没有的元件封装 4. 绘制PCB板 二、 设计要求 图1 汽车音响开关原理图 1. 原理图 [1]根据原理图电路大小，自定义图纸尺寸;横向设置:snap on grid=5， visible grids=10 [2]制作，启用“特殊字符串转换给功能”，自定义标题栏(“File” 栏设置为“NO Path”);并在原理图设计中调用改模板 [3]生成与原理图配套的自定义元件库、元件库的元件规格检测报 [4]生成原理图的元件报表、原理图的电气规格检测报表、网格表 2.PCB板 degree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors should-at a 90beam with small harness line must be smooth transition, small wire harness tied to main beam should be -regularly, neat in appearance, the main1 [1]根据PCB元件实际布局，自定义PCB板物理边界尺寸、电气边界尺 寸 [2]使用向导生成双面印制电路板，尺寸 [3]设置布线、布局规则，完成自动布局、手工调整、自动布线、手工 布线 [4]要求 a) 元件布局间距?20mil b) 设置线宽:最大值20mil、最小值10mil、参考值15mil c)调整电源网络VCC连线属性，更改线宽:30mil d)将电源网络VCC布在顶层，将地线网络GND在底层 e)添加补泪滴，添加GND网络的敷铜，设置敷铜网格间距: 20mil，线宽:10mil [5]生成与PCB板配套的自定义元件封装库、元件封装库的元件规则检 测报表 [6]生成PCB板图的设计规则检测报表 三、原理图绘制过程 1(设置原理图参数 egree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors shouldd-beam with small harness line must be smooth transition, small wire harness tied to main beam should be at a 90-regularly, neat in appearance, the main2 2(生成模板 3(处理自定义标题栏 degree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors should-at a 90beam with small harness line must be smooth transition, small wire harness tied to main beam should be -regularly, neat in appearance, the main3 4. 制作、修改原理图元件库中没有的元件 5. 调用模板，绘制原理图 6. 创建自定义项目元件库 7. 生成原理图相关报表 四、PCB板绘制过程 1. 制作、修改PCB元件封装库中没有的封装 2. 使用向导生成双面PCB板 3. 加载网络表 4. 设置规则 egree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors shouldd-beam with small harness line must be smooth transition, small wire harness tied to main beam should be at a 90-regularly, neat in appearance, the main4 5. 自动布局 6. 自动布线 7(手动调整 8. 创建自定义项目元件封装库 9. 生成PCB相关报表 10.3D预览 degree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors should-at a 90beam with small harness line must be smooth transition, small wire harness tied to main beam should be -regularly, neat in appearance, the main5 五、设计 以往汽车音响用电是直接取用12V铅蓄电池，这样汽车点火产生的脉冲及其他干扰便直接成为音响噪音的主要来源。12V低电压单电源也使音响输出功率收到限制，功放电路也只能用OTL电路，频响特性较差。随着元器件的发展和技术的进步，开关电源已完全能应用于汽车音响。它能提供电压较高的双电源，并能抑制各种噪音的窜入，功放电路也采用OCL电路，使汽车音响效果真正上了档次，汽车音响应用开关电源符合技术发展的需要。 通过这次实训设计，我对于PROTEL及其应用有了更深刻的了解，对于PCB电路板的设计过程有了完整的认识，这些经验对于将来在职业上的工作有很大的帮助，也提高了自身的价值，成为一个技能加学业的优秀大学生。 egree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors shouldd-beam with small harness line must be smooth transition, small wire harness tied to main beam should be at a 90-regularly, neat in appearance, the main6 degree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors should-at a 90beam with small harness line must be smooth transition, small wire harness tied to main beam should be -regularly, neat in appearance, the main7 原理图元件规则检测表 原理图ERC报表 egree angle. 6.4.5 harness banding material for plastic cable tie, and banding material colors shouldd-beam with small harness line must be smooth transition, small wire harness tied to main beam should be at a 90-regularly, neat in appearance, the main8