fpga管脚电流电压设置
上传时间: 2013-11-06
上传用户:sammi
FPGA设计管脚分配注意点
上传时间: 2013-11-18
上传用户:pzw421125
运用PROTEL DXP 2004设计的项目“单管放大”视频教学,完整展现了从原理图到PCB的过程
上传时间: 2013-11-04
上传用户:rologne
创建PCB元件管脚封装
上传时间: 2013-12-08
上传用户:wyiman
MPU-2型恒功率晶闸管中频电源控制线路分析
上传时间: 2013-10-25
上传用户:zhangyigenius
晶闸管应用,晶闸管成功应用的十条黄金规则。
标签: 晶闸管
上传时间: 2014-01-08
上传用户:nostopper
晶闸管控制模块
上传时间: 2013-10-30
上传用户:小小小熊
在Multisim 10软件环境下,设计一种由运算放大器构成的精确可控矩形波信号发生器,结合系统电路原理图重点阐述了各参数指标的实现与测试方法。通过改变RC电路的电容充、放电路径和时间常数实现了占空比和频率的调节,通过多路开关投入不同数值的电容实现了频段的调节,通过电压取样和同相放大电路实现了输出电压幅值的调节并提高了电路的带负载能力,可作为频率和幅值可调的方波信号发生器。Multisim 10仿真分析及应用电路测试结果表明,电路性能指标达到了设计要求。 Abstract: Based on Multisim 10, this paper designed a kind of rectangular-wave signal generator which could be controlled exactly composed of operational amplifier, the key point was how to implement and test the parameter indicators based on the circuit diagram. The duty and the frequency were adjusted by changing the time constant and the way of charging and discharging of the capacitor, the width of frequency was adjusted by using different capacitors provided with multiple switch, the amplitude of output voltage was adjusted by sampling voltage and using in-phase amplifier circuit,the ability of driving loads was raised, the circuit can be used as squarewave signal generator whose frequency and amplitude can be adjusted. The final simulation results of Multisim 10 and the tests of applicable circuit show that the performance indicators of the circuit meets the design requirements.
上传时间: 2014-01-21
上传用户:shen007yue
使用数字万用表判断三极管管脚教程
上传时间: 2015-01-03
上传用户:xitai
场效应管与双极型三极管的比较
上传时间: 2013-10-30
上传用户:moerwang