吳江區(qū)放大器推薦廠家蘇州品縱光電供應-b2b網站_b2b電子商務平臺【買產品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="功率放大器（英文名稱：poweramplifier），簡稱“功放”，是指在給定失真率條件下，能產生**大功率輸出以驅動某一負載（例如揚聲器）的放大器。功率放大器在整個音響系統(tǒng)中起到了“組織、協(xié)調”的樞紐作用，在某種程度上主宰著整個系統(tǒng)能否提供"><meta name="keywords" content="吳江區(qū)放大器推薦廠家,放大器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" 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#f30;"></span></p><p><span>產品關鍵詞：</span>吳江區(qū)放大器推薦廠家,放大器</p><p><span>***更新：</span>2020-07-06 14:27:02</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ao2ne3t" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州品縱光電有限公司</a></p><p><span>聯(lián)系人：</span>杜靖</p><p><span>郵箱: </span>sales@jibled.com</p><p><span>電話: </span>18100681679</p><p><span>傳真: </span>0512_33017681</p><p><span>網址: </span></p><p><span>手機: </span>0512-33017680</p><p><span>地址: </span>江蘇省蘇州太倉市瀏河鎮(zhèn)新塘新誼西路1688號2樓</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="p37rwxq" class="page-proshow02"><p class="title">詳細說明</p><div id="o94tac7" class="box"><p><p style="text-indent:25px">功率放大器（英文名稱：power amplifier），簡稱“功放”，是指在給定失真率條件下，能產生**大功率輸出以驅動某一負載（例如揚聲器）的放大器。功率放大器在整個音響系統(tǒng)中起到了“組織、協(xié)調”的樞紐作用，在某種程度上主宰著整個系統(tǒng)能否提供良好的音質輸出，吳江區(qū)放大器推薦廠家。功率放大器工作原理利用三極管的電流控制作用或場效應管的電壓控制作用將電源的功率轉換為按照輸入信號變化的電流。因為聲音是不同振幅和不同頻率的波，即交流信號電流，吳江區(qū)放大器推薦廠家，三極管的集電極電流永遠是基極電流的β倍，β是三極管的交流放大倍數，應用這一點，若將小信號注入基極，則集電極流過的電流會等于基極電流的β倍，吳江區(qū)放大器推薦廠家，然后將這個信號用隔直電容隔離出來，就得到了電流（或電壓）是原先的β倍的大信號，這現(xiàn)象成為三極管的放大作用。經過不斷的電流放大，就完成了功率放大。吳江區(qū)放大器推薦廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吳江區(qū)放大器推薦廠家,放大器" src="http://tyunfile.71360.com/UpLoadFile/2019/8/7/14/637007841916908366_pinzongguangdian_5791799.jpg"></div><p style="text-indent:25px">功率放大器選購技巧選擇功率放大器的時候，首先要注意它的一些技術指標： 1、輸入阻抗：通常表示功率放大器的抗干擾能力的大小，一般會在5000-15000Ω，數值越大表示抗干擾能力越強； 2、失真度：指輸出信號同輸入信號相比的失真程度，數值越小質量越好，一般在0.05%以下； 3、信噪比：是指輸出信號當中音樂信號和噪音信號之間的比例，數值越大**聲音越干凈。另外，在選購功率放大器的時候還要明確購買意愿，如果希望加裝低音炮，比較好購買5聲道的功放，通常2聲道和4聲道揚聲器只能推動前后揚聲器，而低音炮只能再另配功放，5聲道功放就可以解決這個問題，功率放大器的輸出功率也要盡量大于揚聲器的額定功率。常州RP2005放大器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吳江區(qū)放大器推薦廠家,放大器" src="http://tyunfile.71360.com/UpLoadFile/2019/8/7/14/637007841917064474_pinzongguangdian_9463327.jpg"></div><p style="text-indent:25px">功率放大器通常由3部分組成：前置放大器、驅動放大器、末級功率放大器。 1、前置放大器起匹配作用，其輸入阻抗高（不小于10kΩ），可以將前面的信號大部分吸收過去，輸出阻抗低（幾十Ω以下），可以將信號大部風傳送出去。同時，它本身又是一種電流放大器，將輸入的電壓信號轉化成電流信號，并給予適當的放大。 2、驅動放大器起橋梁作用，它將前置放大器送來的電流信號作進一步放大，將其放大成中等功率的信號驅動末級功率放大器正常工作。如果沒有驅動放大器，末級功率放大器不可能送出大功率的聲音信號。 3、末級功率放大器起關鍵作用。它將驅動放大器送來的電流信號形成大功率信號，帶動揚聲器發(fā)聲，它的技術指標決定了整個功率放大器的技術指標。</p><p style="text-indent:25px">功率放大器的基本組成功率放大器通常由3部分組成：前置放大器、驅動放大器、末級功率放大器。 1、前置放大器起匹配作用，其輸入阻抗高（不小于10kΩ），可以將前面的信號大部分吸收過去，輸出阻抗低（幾十Ω以下），可以將信號大部風傳送出去，同時，它本身又是一種電流放大器，將輸入的電壓信號轉化成電流信號，并給予適當的放大； 2、驅動放大器起橋梁作用，它將前置放大器送來的電流信號作進一步放大，將其放大成中等功率的信號驅動末級功率放大器正常工作，如果沒有驅動放大器，末級功率放大器不可能送出大功率的聲音信號； 3、末級功率放大器起關鍵作用，它將驅動放大器送來的電流信號形成大功率信號，帶動揚聲器發(fā)聲，它的技術指標決定了整個功率放大器的技術指標。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吳江區(qū)放大器推薦廠家,放大器" src="http://tyunfile.71360.com/UpLoadFile/2019/8/7/14/637007841916596150_pinzongguangdian_5417733.jpg"></div><p style="text-indent:25px">功放所用的有源器件主要是晶體管(雙極型或場效應晶體管），在工作頻率很高或要求輸出功率很大等場合,也使用電子管(包括大功率發(fā)射電子管）；在微波段使用行波管。功放按其有源器件的工作點不同可分為甲（A)類、甲乙（AB)類、乙（B)類、丙(C)類和?。―)類等。表內列出不同工作類型的功率放大器對正弦波所能達到的**高效率。功放常應用于廣播、通信發(fā)射機的輸出級、音響系統(tǒng)的輸出級以及控制系統(tǒng)驅動執(zhí)行機構的放大器等。應用場合不同,性能要求不同，電路的構成與工作類型也不同。常用的有線性功放、諧振功放、寬帶功放電路等。為提高輸出功率，可采用功率合成技術。吳江區(qū)放大器推薦廠家</p><p style="text-indent:25px">吳江區(qū)放大器推薦廠家</p><p style="text-indent:25px">功率放大器注意事項對于主要作用是向負載提供功率的放大電路通常稱為功率放大電路，其主要特點如下： 1、輸出功率是指交變電壓和交變電流的乘積，即交流功率； 2、交流功率是在輸入為正弦波、輸出波形基本不失真時定義的； 3、輸出功率大，因而消耗在電路內的能量和電源提供的能量也大； 4、晶體管常常工作在極限應用狀態(tài)，由此要考慮必要的散熱措施和過電流、過電壓的保護措施。吳江區(qū)放大器推薦廠家</p><p style="text-indent:25px">蘇州品縱光電有限公司創(chuàng)立于2014-12-15，總部位于江蘇省蘇州市，是一家生產，加工光電驅動設備；光電驅動設備、照明燈具、電子產品、光電科技領域的技術開發(fā)、技術轉讓、技術咨詢、技術服務；電子產品、機械設備、計算機軟硬件、音響器材、五金交電、建筑材料、樓宇智能化設備、燈具照明設備、安防設備及配件的銷售；企業(yè)咨詢管理、企業(yè)形象策劃、網絡工程；自營和代理各類商品及技術的進出口業(yè)務（國家限定企業(yè)經營或禁止進出口的商品和技術除外）。（依法須經批準的項目，經相關部門批準后方可開展經營活動）的公司。蘇州品縱作為生產，加工光電驅動設備；光電驅動設備、照明燈具、電子產品、光電科技領域的技術開發(fā)、技術轉讓、技術咨詢、技術服務；電子產品、機械設備、計算機軟硬件、音響器材、五金交電、建筑材料、樓宇智能化設備、燈具照明設備、安防設備及配件的銷售；企業(yè)咨詢管理、企業(yè)形象策劃、網絡工程；自營和代理各類商品及技術的進出口業(yè)務（國家限定企業(yè)經營或禁止進出口的商品和技術除外）。（依法須經批準的項目，經相關部門批準后方可開展經營活動）的品牌企業(yè)，為客戶提供質量的[ "LED調光電源", "LED調光驅動", "LED控制器" ]。依托效率源扎實的技術積累、完善的產品體系、深厚的行業(yè)基礎，目前擁有員工數51~100人，年營業(yè)額達到200-300萬元。蘇州品縱始終關注照明工業(yè)行業(yè)。海納百川，有容乃大，國內外同行的智慧都是促使我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/514194.html</p></div></div></div></div></div><div id="hc3gxjh" class="page-right twoColRt"><div id="fawseea" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="oxt33ow" class="recomPic likePro"><a 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