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Description: 原理图常见错误： （1）ERC报告管脚没有接入信号： a. 创建封装时给管脚定义了I/O属性； b.创建元件或放置元件时修改了不一致的grid属性，管脚与线没有连上； c. 创建元件时pin方向反向，必须非pin name端连线。 （2）元件跑到图纸界外：没有在元件库图表纸中心创建元件。 （3）创建的工程文件网络表只能部分调入pcb：生成netlist时没有选择为global。 （4）当使用自己创建的多部分组成的元件时，千万不要使用annotate.-principle of common mistakes : (1) ERC report no access to signal pins : a. creation package to the pin at the definition of I / O attribute; b. create components or modify components placed inconsistent grid attributes, and the lines do not pin connection; c. create components reverse direction when the pin, non-name-pin connections. (2) components went to the drawings profession : no paper charts component library center components. (3) the creation of the document network table works only partially transferred PCB : netlist generation did not choose to global. (4) When the use of their own creation, multi-component element, we must use annotate.
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Size: 25051 |
Author: 李越 |
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Description: PCB设计指导-8--PCB design guide - 8.
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Size: 214151 |
Author: 彭明 |
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Description: PCB设计指导-8--PCB design guide- 8.
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Size: 214016 |
Author: 彭明 |
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Description: 一个象示波器一样的界面，他可以同时实时显示8个信号曲线，并且可以滚动显示-an oscilloscope as the same interface, he can show the real-time signal eight curves, and can show rolling
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Size: 1409024 |
Author: 潘卫华 |
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Description: 用Freescale的8位单片机做的RS232-CAN的通讯转换板.包含固件程序,原理图,PCB图和一个说明文件.-with Freescale's 8-bit MCU do RS232-CAN communication switch plate. Includes firmware procedures, drawings, PCB map and a note.
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Size: 137216 |
Author: 石头 |
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Description: IA4420 工作在315/433/868/915MHz 频段（IA4421 工作在433/868/915MHz 频段）；
2． 低电压工作，工作电压2.2V~5.4V；
3． 低功耗模式，待机电流0.3uA；
4． 调制模式FSK，并具备高度集成的PLL；
5． 低发射功率、高接收灵敏度设计，发射功率5~10 dbm 可调，接收灵敏度-109 dbm；
6． 内置时钟输出，可省掉MCU 的晶振；
7． 传输数据率高，数字信号可达115.2 kbit/s,模拟信号可达256 kbit/s；
8． 发射频偏与接收带宽可调；
9． 内部有数字滤波器，并可以根据要求选择不同的方式；
10． SPI 的控制接口，方便使用；
11． 接收时有数据同步码识别器，系统检测同步码后将后面的数据输出；
12． 有16 位的收发缓存器，用来缓存接收到或要发送的数据（接收数据有两种方式，用户可以按需选择）；
13． 有低电压检测器，从2.2-5.4V 可调；
14． 有定时唤醒功能，定时时间可达几天；
15． 天线的兼容性强，有天线自动调节功能，并可采用PCB 或外置天线；
16． 工作温度范围-40~85，储存温度范围-55~125℃；
17． 采用微小TSSOP16 封装。
-315/433/868/915MHz IA4420 work in the band (IA4421 Working in 433/868/915MHz band); 2. Low-voltage, voltage 2.2 V ~ 5.4V; 3. Low-power mode, standby current 0.3 uA 169* 85*; 4. FSK modulation mode, and highly integrated PLL; 5. Low emission power and high receiver sensitivity, launched power 5 ~ 10 dbm adjustable,-109 dbm receiver sensitivity; 6. Built-in clock output can be saved MCU resonator; 7. Higher data transmission rate, digital signal of up to 115.2 kbit/s, analog signal up to 256 kbit/s; 8. Emission Offset and receiving adjustable bandwidth; 9. Internal digital filters, and may request to have a choice of different ways; 10. SPI control interface, and ease of use; 11. When receiving data synchronization code identifier, the system will detect synchronous code behind the
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Size: 38912 |
Author: |
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Description: STGAN VGA PCB 2007.2.8
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Size: 233472 |
Author: 斜晖 |
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Description: 《高速PCB设计指南》，一本讲解高速电路设计的数籍，共8章。
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Size: 803840 |
Author: quguoqiang |
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Description: 高速PCB设计软件HyperLynx使用指南,希望对大家搞硬件设计有帮助！-High-speed PCB design software HyperLynx to use the Guide, and they hope to have everyone engaged in hardware design to help!
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Size: 503808 |
Author: wangweimin76 |
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Description: Stellaris Luminary Micro 系列之 DK-LM3S811 多个学习范例全都是基于 Keil 工程版的范例,
而范例内容列举如下: 1.BitBand 2.Comparator 3.GPIO_JTAG 4.GPIO_LED 5.Hello
6.Interrupts 7.QS_DK_LM3S811 8.SSI_Atmel 9.Timers 10.UART_Out 11.WatchDog 12.PWMgen
13.I2C_Atmel 等-Stellaris Luminary Micro Series DK-LM3S811 example of a number of study are engineering-based version of the Keil examples, and examples of content are listed below: 1.BitBand 2.Comparator 3.GPIO_JTAG 4.GPIO_LED 5.Hello 6.Interrupts 7.QS_DK_LM3S811 8. SSI_Atmel 9.Timers 10.UART_Out 11.WatchDog 12.PWMgen 13.I2C_Atmel, etc.
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Size: 361472 |
Author: kly |
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Description: 8层PCB生产工艺流程，电路板（PROTEL）-8-layer PCB manufacturing process, circuit board (PROTEL)
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Size: 575488 |
Author: 陈光荣 |
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Description: 简易数字电压表可以测量0~5CV的8路输入电压值，并在4位LED数码管上轮流显示或单路选择显示。测量最小分辨率为0.019V，测量误差约为0.02V。
-Simple digital voltage meter can measure 0 ~ 5CV 8-way input voltage value, and the four LED digital tube display or one-way rotating choose to display. Measuring a minimum resolution of 0.019V, measurement error is about 0.02V.
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Size: 697344 |
Author: 任星 |
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Description: FPGA footprint PCB PCB-FPGA footprint
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Size: 111616 |
Author: 上面的 |
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Description: Nokia N95 8gb schematic level3 include PCB
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Size: 1028096 |
Author: malisko |
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Description: schematics and pcb layout (PCB Express format) of a board for programming 8, 20 and 40 pins AVRs (just ISP and powering by USB)
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Size: 20480 |
Author: bleblebluble |
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Description: at91sam7x256 pcb and schematic
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Size: 1115136 |
Author: jk |
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Description: PCB软件Autodesk Eagle 8.2.1 windows 64位版本 破解补丁(PCB software Autodesk Eagle 8.2.1 windows 64-bit version crack patch)
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Size: 61440 |
Author: canghai
|
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Description: PCB软件Autodesk Eagle 8.1.1 windows 64位版本 破解补丁(PCB software Autodesk Eagle 8.1.1 windows 64-bit version crack patch)
Platform: |
Size: 60416 |
Author: canghai
|
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Description: PCB软件Autodesk Eagle 8.3.2 windows 64位版本 破解补丁(PCB software Autodesk Eagle 8.3.2 windows 64-bit version crack patch)
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Size: 71680 |
Author: canghai
|
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Description: RTL8309N-CG交换机方案，无管理型；
8口Switch的原理图、PCB图、芯片规格书(RTL8309N-CG switch without managment,
8 port Switch schematic,PCB,datasheet.)
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Size: 2143232 |
Author: 大力197892 |
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