基于锁相技术的三相交流调压电源设计

采用锁相环技术,通过拾取某一相的信号,经过相位比较、低通滤波、压控振荡实现触发信号脉冲与拾取的相位信号同步.给定信号和反馈信号经过PID调节,送C8051F310单片机的ADC单元,经程序处理产生同步移相脉冲输出,送由复杂可编程逻辑器件EPM7032完成脉冲成型及放大,由触发器电路输出控制三相可控硅全控桥实现交流调压,...     

High precision voltage reference generator for 16-bit 100MS/s ADC

An output adjustable voltage reference generator for the 16-bit 100MS/s pipelined ADC is presented. An adjustable output voltage, fast-setting, high precision reference voltage buffer is designed by using current summing and floating current control techniques. In order to further improve the PSRR and reduce the output impedance, the push pull output and replica circuit structure is introduced. The prototype 16-bit 100MS/s ADC is fabricated by 0.18μm 1.8V 1P6M CMOS technology.Test results show that the voltage reference generator consumes an area of 1.3mm×2.0mm, and the power consumption is 23mW. The average temperature coefficient of the output voltage is 16×10^-6℃^-1 in the range of -55℃ to 125℃. The 16-bit 100MS/s ADC achieves the SNR of 76.3dBFS and SFDR of 89.2dBc, with 10.1MHz input at the full sampling speed, and it consumes the power of 300mW and occupies an area of 3.5mm×5.0mm.     

高效T5细管径荧光灯用电子镇流器发展趋势

Ｔ５细管径荧光灯由于其具有有高光效、长寿命、体积小、重量轻等诸多优点,近几年来发展很快,作为绿色的重要光源受到世界各国的重视,优良的光源也相应要求有好的辅件与其配套,电子镇流器作为绿色照明家族的一员,具有节能、省电、无频闪、保护视力、良好的启特性等优点,当之无愧的应这的配套产品。本文就Ｔ５细管径荧光灯与用电子镇流器的发展趋势淡些粗浅看法。     

一种多数据同步互斥管理机制的实现

不同数据间同步互斥是影响多核处理器核间通信的重要因素.为提高不同数据节点间的通信效率,降低通信延迟,并减少数据传输的丢包现象,结合自适应随机早期检测(ARED)算法和二进制指数退避(BEB)算法,提出一种软硬件结合的同步互斥管理分配方式.通过Matlab建模分析两种算法的可行性,并移植到ZYNQ7000开发平台中进行仿...