I just learned Protel99 recently. When making the package of the LTC2051 chip component , I encountered some problems. I would like to ask you: Figure a is the dimension diagram of the component on th
[p=26, null, left][color=#000][font=Arial]1, VDSS (breakdown voltage): This voltage should be selected appropriately, generally twice the peak value of the added voltage. [/font][/color][/p][p=26, nul
I want to use STM32F4 to read and write micro SD card through FATFS file system and SDIO, but I found that I can create txt file, but I can't write data into it. What's going on? As shown in the figur
[align=left][size=14pt][b]Introduction
[/b]The [i]phase-locked loop[/i] (PLL) is a fundamental building block of modern communication systems. [url=http://www.analog.com/en/rfif-components/pll-synthes