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您现在的位置:水果拉霸多人版 >> 技术文章 >> 模拟信号发生器的工作原理
模拟信号发生器的工作原理
浏览次数:2970发布日期:2015-01-12

水果拉霸多人版MONIXINHAOFASHENGQINENGSHUCHUDUOZHONGBOXING,YIBANYOUJICHENGDIANLUYUJINGTIGUANGOUCHENG,TONGCHANGCAIYONGHENGLIUCHONGFANGDIANDEYUANLILAICHANSHENGSANGUIBO,TONGSHICHANSHENGFANGBO,GAIBIANCHONGFANGDIANDEDIANLIUZHI,JIUKEYIDEDAOBUTONGPINLVDEXINHAO。DANGCHONGDIANYUFANGDIANDEDIANLIUZHIBUXIANGDENGSHI,YUANXIANDESANJIAOBOJIUBIANCHENGGEZHONGXIELVDEJUCHIBO,TONGSHIFANGBOBIANCHENGGONGZUOZHANKONGBIDEJUXINGBO。LINGWAI,JIANGSANJIAOBOTONGGUOBOXINGBIANHUANDIANLU,KEYICHANSHENGZHENGXIANBO。CHANSHENGDEBOXINGJINGGUOHANSHUKAIGUANZHUANHUANYOUGONGLVFANGDAQIFANGDAHOUSHUCHU。MONIXINHAOFASHENGQIDEDIANLUGOUCHENGYOUDUOZHONGXINGSHI,YIBANYOUYIXIAJIGEHUANJIE。

1. JIBENBOXINGFASHENGDIANLU

BOXINGFASHENGKEYISHIYOURCZHENDANGQI、YAKONGZHENDANGQIDENGDIANLUCHANSHENG。

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3. FANGDADIANLU

JIANGBOXINGZHUANHUANDIANLUSHUCHUDEBOXINGJINXINGXINHAOFANGDA。

4. KEDIAOSHUAIJIANDIANLU

水果拉霸多人版KEJIANGSHUCHUXINHAOJINXING20dB、40dB、60dBSHUAIJIANCHULI,SHUCHUGEZHONGFUDUDEXINHAO。

QIJIANHUADEGONGZUOYUANLIKUANGTURUTU8-4SUOSHI,TUZHONGFANGBOYOULANJIAOBOTONGGUOFANG BOBIANHUANDIANLUBIANHUANERCHENG。SHIJIDIANLUZHONG,SANJIAOBOHEFANGBODECHANSHENGSHINANYIFENKAIDE,FANGBOXINGCHENGDIANLUTONGCHANGSHISANJIAOBOFASHENGQIDEZUCHENGBUFEN,ZHENGXIANBOSHISANJIAOBOTONGGUOZHENGXIANBOXINGCHENGDIANLUBIANHUANERLAIDE。SUOXUDEBOXINGJINGGUOXUANQU、FANGDAHOUJINGSHUAIJIANQISHUCHU。ZHILIUPIANZHIDIANLUTIGONGYIGEZHILIUBUCHANG,SHIXINHAOFASHENGQISHUCHUDEJIAOLIUXINHAOKEJIAJINZHILIUCHENGFEN,ERQIEZHILIUCHENGFENDEDAXIAOKEYIDIAOJIE。

数字合成信号发生器没有振荡元件,是用数字合成方法产生一连串数据流,再经过数/模转换产生预先设定的模拟信号,即利用程序软件产生所需的信号,其原理框图如图8-5所示。

波形合成原理:例如要产生一个正弦波,首先将函数y=sina:进行数字量化,再以为地址,y为量化数据,依次存人波形存储器。

水果拉霸多人版SHUZIHECHENGXINHAOFASHENGQISHISHIYONGXIANGWEILEIJIAJISHUKONGZHIBOXINGCUNCHUQIDEDIZHI,ZAIMEIGECAIYANGZHOUQIZHONG,SHUZIHECHENGXINHAOFASHENGQIDOUBAYIGEXIANGWEIZENGLIANG,LEIJIADAOXIANGWEILEIJIAQIDEDANGQIANJIEGUOSHANG,TONGGUOGAIBIANXIANGWEIZENGLIANGERSHISHUCHUDEPINLVFASHENGGAIBIAN;ZAIGENJUXIANGWEILEIJIAQISHUCHUDEDIZHI,YOUBOXINGCUNCHUQIQUCHUBOXINGLIANGHUASHUJU, JINGSHU/MOZHUANHUANQIHEYUNSUANFANGDAQIZHUANHUANCHENGMONIXINHAODIANYA。DANSHIBOXINGSHUJUSHIJIANDUANDECAIYANGSHUJU,SHUCHUSHIYIGEJIETIXINGDEZHENGXIANBO,BIXUJINGGUODITONGLVBOQI LVCHUBOXINGZHONGDEGAOCIXIEBO,CAIKEBIANWEILIANXUDE,KEGONGSHIYONGDEZHENGXIANBO。

水果拉霸多人版ZHENGXIANBODESHUCHUFUDUSHIYOUFUDUKONGZHIQIKONGZHIDE,TAJIANGDITONGLVBOQISHUCHU DEMANFUDUXINHAO,ANZHAOSHEDINGDEYAOQIUJINXINGBILISHUAIJIAN,JINGGUOGONGLVFANGDAQIFANGDAHOU,SONGZHISHUCHUDUANKOU。WEICHULIQISHIZHENGJIDEKONGZHIZHONGXIN,TONGGUOJIANPANKONGZHIGEGEMOKUAIGONGZUO,SHIXIANQISHUCHUSHEZHI。

8.4.1低频信号发生器的组成

DIPINXINHAOFASHENGQIZUCHENGKUANGTURUTU8-6SUOSHI,ZHUYAOBAOKUOZHUZHENQI、HUANCHONGFANGDAQI、DIANPINGDIAOJIEQI、GONGLVFANGDAQI、SHUCHUSHUAIJIANQI、ZUKANGBIANHUANQIHESHUCHUZHISHIQIDENGBUFEN。



1. ZHUZHENQI

水果拉霸多人版ZHUZHENQISHIDIPINXINHAOFASHENGQIDEHEXINBUFEN,CHANSHENGPINLVKEDIAODEZHENGXIANXINHAO,TAJUEDINGLEXINHAOFASHENGQIDEYOUXIAOPINLVFANWEIHEPINLVWENDINGDU。DIPINXINHAOFASHENGQIZHONGCHANSHENGZHENDANGXINHAODEFANGFAYOUDUOZHONG,XIANDAIDIPINXINHAOFASHENGQIZHONG,ZHUZHENQICHANGCAIYONGRCWENSHIDIANQIAOZHENDANGDIANLU。QIYUANLIKUANGTURUTU8-7SUOSHI。

2. HUANCHONGFANGDAQI

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3. GONGLVFANGDAQI

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4. SHUCHUSHUAIJIANQI

如图8-8.所示电路为低频信号发生器中zui常用的输出衰减器。由电位器RP取出一部分信号电压加于A~组成的步进衰减器,调节电位器或调节波段开关s所接的档位,均可使衰减器输出不同电压。





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