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src="/template/NEST300017/images/erji_left_3.gif" alt="新闻中心" width="719" height="24" /></div> <div id="qmv7ab8uj" class="JSright_title"> <div id="qmv7ab8uj" class="JSright_title_L"> <span>新闻详细</span> </div> <div id="qmv7ab8uj" class="JSright_title_R">您现在的位置?a href="/">首页</a> > <a href="/news/">新闻信息</a> > 详细内容 </div> </div> <div id="qmv7ab8uj" class="JScpzs_cont"> <!--pages内容--> <div id="qmv7ab8uj" class="detail"> <div id="qmv7ab8uj" class="content"> <h3>【推荐】直流稳压电源的自载稳定度_信号发生器价格了解一?/h3> <h6>来源?a href='http://szhxtt.com/news/337.html'>http://szhxtt.com/news/337.html</a></h6> <h6>发布时间?019-08-23</h6> <div class="public" id="zoom"> <p style="line-height:24px;">今天我们会为大家带来<a target="_blank" href="http://szhxtt.com/news/337.html">直流稳压电源的自载稳定度</a>,希望通过我们的介绍让您对<a href="http://szhxtt.com/" target="_blank">石家庄数英仪器有限公?/a>等问题有更深入的了解<p style="text-indent:2em;">这是指在所有其它影响量保持不变时,由于负载的变化使输出电流在额定值I和零之间变化时所引起的输出电压的相对变化量.负载稳定度的符号为sl由定义可知第二节稳压原理是用来说明线性调整型晶体管直流稳压电源工作原理的一种基本稳压电路。El是整流滤波电路的电动势RI是整流滤波电路的等效内阻,U是未经稳定的输入电压,U2是输出的稳定电压,I是输出电流,RL是外负载,磁是过电流保护电路的检测电阻,BG为调整管,BG2为放大管,D为基准稳压管,R和R2为取样电阻.这种将调整级与负载串联的稳压电源称为串联型稳压电源。其调整作用是连续的,所以又称为线性调整型稳压电源.调整作用是利用负反馈的原理来获得的:电阻R和R2,组成的分压器用来把输出电压U的变动量的一部分取出来,加至放大管BG的基级上,所以R和R2支路称为取样电路.从R取得的电压U叫做取样电压.为了保证取样电压只反映U的变动,而不受BG基极电流1的影响,在设计中要使通过R和R2的电流I8远大?HZ。由硅稳压管Df和限流电阻R组成的电路用来提供基准电压,它等于稳压管D的稳定电压Ur,加到放大管BG的发射极。BG起着将取样电压Ub和基准电压Uz进行比较并对其差值进行放大的作用,所以称为误差放大器U和Uz的差值UAB称为误差电压,UAB=UR是误差放大器的负载电阻。从BG输出的控制电流加到调整管BG的基极用来控制BG的基极电流直流,直流稳压电源的自载稳定度达到维持输出电压近似不变的调整作用?/p><p style="text-indent:2em;"> <span style="color:#0020ff;">您或许感兴趣的文章:</span> </p><p style="text-indent:2em;"><b><a href="http://szhxtt.com/" target="_blank" style="font-weight:bold">信号发生器价?/a></b>行情,了解一下?/p><p style="text-indent:2em;"><a href="http://szhxtt.com/xhfsq/" target="_blank">信号发生?/a>可以用来查找电台、对讲机的接收通道故障。其基本原理是:由前级往后级,逐一测量接收通路中每一级放大和滤波器,找出哪一级放大电路没有达到设计应有的放大量或者哪一级滤波电路衰减过大。信号发生器在此扮演的是标准信号源的角色。信号源在对讲机天线输入端输入一个已知幅度的信号,然后通过超高频电压表或者频率足够高的示波器,从天线输入端口逐级测量增益情况,找出增益异常的单元,再进一步细查,最后确诊存在故障的零部件?/p><p style="text-indent:2em;">信号发生器价格我们专业,可咨询!</p>“直流稳压电源的自载稳定度”和另外<b>直流稳定电源</b>使用一篇文章都给大家提供一些帮助,我们会在后续精心准备更多有关石家庄数英仪器有限公司的内容,如果不想错过,建议收藏我们的网站吧?/p> </div> <p><div>上一?<a href="338.html">【推荐】河北频谱分析仪 交流稳定电源的基础知识</a></div> <div>下一?<a href="336.html">【图片】什么是直流稳定电源 直流稳压电源的自载稳定度</a></div> </p> </div> <div id="qmv7ab8uj" class="left"> <div id="qmv7ab8uj" class="function">【相关标签】:<a href='/key.aspx?k=%e7%94%b5%e5%8e%8b'>电压</a>,<a href='/key.aspx?k=%e7%a8%b3%e5%8e%8b'>稳压</a>,<a href='/key.aspx?k=BG'>BG</a>,<a href='/key.aspx?k=%e6%94%be%e5%a4%a7'>放大</a>,<a href='/key.aspx?k=%e8%b0%83%e6%95%b4'>调整</a>,</div> </div> <div id="qmv7ab8uj" class="clearit"></div> <div id="qmv7ab8uj" class="commend_tit"> <h2>相关新闻</h2> </div> <div id="qmv7ab8uj" class="commend_list"> <ul> <li><a 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