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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="uszbi72" class="twoCol"><div id="y7t8lj2" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_dianyuan/">電源</a>?<a href="http://www.cdcfah.com/cp/third-dianyuan_wydy/">穩(wěn)壓電源</a>?廣東直流電源限流歡迎來電深圳市茂迪機(jī)電設(shè)備供應(yīng)</p><div id="qzbiuo4" class="leftbox clearfix"><h1>廣東直流電源限流歡迎來電深圳市茂迪機(jī)電設(shè)備供應(yīng)</h1><div id="tctpw8s" class="proBig"><div id="bahoftc" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r3bfbxg" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mfm3h7t" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東直流電源限流,直流電源</p><p><span>***更新：</span>2020-12-24 09:16:36</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="z8dug2y" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市茂迪機(jī)電設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>黃富強(qiáng)</p><p><span>郵箱: </span>fuqiang.huang@maodi.net</p><p><span>電話: </span>13509625980</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.maodi.net</p><p><span>手機(jī): </span>0755-83280136</p><p><span>地址: </span>深南大道6006號華豐大廈2803、2804</p><p>[當(dāng)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="g7ahtkb" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="l2v7wlx" class="box"><p><p> 可編程直流電源的作用是什么？ </p> <p> 可編程直流電源是用數(shù)字或編碼器輸入，非電位器調(diào)節(jié)電壓，廣東直流電源限流、電流的直流電源。 </p> <p> <br /> </p> <p> 可編程直流電源有以下作用： </p> <p> 1、**功能——在某些可編程電源中，有一種通道間聯(lián)動(dòng)的功能，即**功能。 </p> <p> **功能指所有的輸出同時(shí)被控制，廣東直流電源限流，并且通過保持電壓與事先設(shè)定的電壓一致，使它們都服從統(tǒng)一指揮。 </p> <p> 例如：如果電壓1從10V變?yōu)?2V，則電壓2和3將隨之從5V變?yōu)?V，電壓4隨之從20V變?yōu)?4V。 </p> <p> 但是，如果其中一個(gè)處于領(lǐng)導(dǎo)位置的輸出的比較大電流存在極限值，而且輸出電流達(dá)到該極限值時(shí)，則所有其他處于從屬地位的輸出電流也同時(shí)進(jìn)入限流狀態(tài)，廣東直流電源限流。 </p> <p> 如果設(shè)備中安裝了電子保險(xiǎn)絲，則到達(dá)該極限值的輸出將被斷開，進(jìn)而其他處于從屬位置的輸出也全部被斷開。 </p> <p> <br /> 可編程直流電源廠家。廣東直流電源限流</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源限流,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png"></div><p> 技術(shù)指標(biāo)直流電源的技術(shù)指標(biāo)分為兩種：一種是特性指標(biāo)，包括允許輸入電壓、輸出電壓、輸出電流及輸出電壓調(diào)節(jié)范圍等；另一種是質(zhì)量指標(biāo)，用來衡量輸出直流電壓的穩(wěn)定程度，包括穩(wěn)壓系數(shù)(或電壓調(diào)整率)、輸出電阻(或電流調(diào)整率)、紋波電壓(周圍與隨機(jī)漂移)。 </p> <p> 1) 穩(wěn)壓系數(shù)及電壓調(diào)整率穩(wěn)壓系數(shù)是指在負(fù)載電流、環(huán)境溫度不變的情況下，輸入電壓的相對變化引起輸出電壓的相對變化。電壓調(diào)整率是指輸入電壓相對變化為±10%時(shí)的輸出電壓相對變化量，穩(wěn)壓系數(shù)和電壓調(diào)整率均說明輸入電壓變化對輸出電壓的影響，因此只需測試其中之一即可。 </p> <p> <br /> </p> <p> 2) 輸出電阻及電流調(diào)整率輸出電阻與放大器的輸出電阻相同，其值為當(dāng)輸入電壓不變時(shí)，輸出電壓變化量與輸出電流變化量之比的***值。電流調(diào)整率：輸出電流從0變到最大值時(shí)所產(chǎn)生的輸出電壓相對變化值。輸出電阻和電流調(diào)整率均說明負(fù)載電流變化對輸出電壓的影響，因此也只需測試其中之一即可。 </p> <p> <br /> </p> <p> 3)紋波電壓疊加在輸出電壓上的交流電壓分量。用示波器觀測其峰峰值一般為毫伏量級。也可用交流毫伏表測量其有效值，但因紋波不是正弦波，所以有一定的誤差，一般直流電源的紋波電壓VP-P≤10mV。 </p> <p> <br /> 廣東直流電源限流開關(guān)可調(diào)直流電源廠家？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源限流,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089466869621/342152.png"></div><p> 3、會(huì)產(chǎn)生反向電流的負(fù)載應(yīng)用當(dāng)連接在可編程直流電源供應(yīng)器輸出端的電機(jī)突然剎車時(shí)，會(huì)產(chǎn)生很大的反向電流，由于可編程直流電源供應(yīng)器不能吸收從負(fù)載端產(chǎn)生的反向電流，因而輸出電壓會(huì)上升。解決方法是在可編程直流電源供應(yīng)器的輸出端與負(fù)載之間串聯(lián)一只二極管，并在負(fù)載端并接一瀉放電阻來吸收反向電流。當(dāng)反向電流為一尖峰突波時(shí)，請?jiān)谪?fù)載兩端并接一個(gè)大容量電解電容。 </p> <p> 4、電容性負(fù)載應(yīng)用因?yàn)殡娙菪载?fù)載往往會(huì)導(dǎo)致輸出電壓升高，尤其在輸出電壓由高向低調(diào)節(jié)時(shí)會(huì)導(dǎo)致輸出電壓下降緩慢，因此，使用時(shí)在可編程直流電源供應(yīng)器的輸出端并聯(lián)一只功率電阻，并在輸出與負(fù)載之間串聯(lián)一只二極管，可獲得較好的使用效果。 </p> <p> 5、脈沖類負(fù)載應(yīng)用脈沖類負(fù)載的電流峰值即使在可編程直流電源供應(yīng)器輸出額定電流值范圍內(nèi)，或者脈沖類電路或電動(dòng)機(jī)驅(qū)動(dòng)電路負(fù)載電流波形，在計(jì)量設(shè)備所指示的標(biāo)稱值(平均值)內(nèi)。電流也會(huì)達(dá)到可編程直流電源供應(yīng)器額定電流區(qū)域，從而使輸出電壓下降或者顯得不穩(wěn)定。解決方法是在電源供應(yīng)器與負(fù)載之間串接電感器，或者選擇輸出電流更大的可編程直流電源供應(yīng)器。 </p><p> 航天事業(yè)擔(dān)負(fù)著特殊的國家使命。航天通信系統(tǒng)具有**性和保密性特點(diǎn)，特別是較高的時(shí)效性要求。通信電源的可靠性是航天通信部門首要考慮的問題，是通信系統(tǒng)安全運(yùn)行的重要保證。當(dāng)前，航天系統(tǒng)各通信局（站）普遍采用UPS系統(tǒng)作為IT設(shè)備的主用電源，它克服了因市電中斷而導(dǎo)致的系統(tǒng)中斷。但是，UPS自身、甚至并機(jī)冗余系統(tǒng)的故障導(dǎo)致網(wǎng)絡(luò)通信事故也時(shí)有發(fā)生，已產(chǎn)生較大的社會(huì)影響和相當(dāng)?shù)慕?jīng)濟(jì)損失。240V高壓直流供電系統(tǒng)（HVDC）作為一項(xiàng)簡單、可靠的技術(shù)，減少了電力轉(zhuǎn)換環(huán)節(jié)，提高了供電可靠性和效率，受到了業(yè)界的***關(guān)注。航天通信部門應(yīng)積極**電源科技的發(fā)展變化，關(guān)注應(yīng)用實(shí)踐中的探索成果，將新技術(shù)轉(zhuǎn)換為新應(yīng)用，提升航天通信系統(tǒng)的可靠性水平。 </p> <p> 直流電源進(jìn)口便攜式交直流電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源限流,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089681674399/8070519.png"></div><p> 當(dāng)電源的內(nèi)電阻可以忽略不計(jì)時(shí)，可以認(rèn)為電源的電動(dòng)勢在量值上近似地等于電源兩極間的電位差或電壓。 </p> <p> 為了取得較高的直流電壓，常將直流電源串聯(lián)使用，這時(shí)總電動(dòng)勢為各電源的電動(dòng)勢之和，總內(nèi)阻也為各電源內(nèi)電阻之和。由于內(nèi)阻增大，一般只能用于所需電流強(qiáng)度較小的電路。為了取得較大的電流強(qiáng)度，可以將等電動(dòng)勢的直流電源并聯(lián)使用，這時(shí)總電動(dòng)勢即為單個(gè)電源的電動(dòng)勢，總內(nèi)阻為各電源內(nèi)電阻的并聯(lián)值。 </p> <p> 直流電源的類型直流電源的類型很多，不同類型的直流電源中，非靜電力的性質(zhì)不同，能量轉(zhuǎn)換的過程也不同。在化學(xué)電池(例如干電池、蓄電池等)中，非靜電力是與離子的溶解和沉積過程相聯(lián)系的化學(xué)作用，化學(xué)電池放電時(shí)，化學(xué)能轉(zhuǎn)化為電能和焦耳熱在溫差電源(例如金屬溫差電偶、半導(dǎo)體溫差電偶)中，非靜電力是與溫度差和電子的濃度差相聯(lián)系的擴(kuò)散作用，溫差電源向外電路提供功率時(shí)，熱能部分地轉(zhuǎn)化為電能。 </p> <p> 在直流發(fā)電機(jī)中,非靜電力是電磁感應(yīng)作用,直流發(fā)電機(jī)供電時(shí)，機(jī)械能轉(zhuǎn)化為電能與焦耳熱。在光電池中，非靜電力是光生伏打效應(yīng)的作用，光電池供電時(shí)，光能轉(zhuǎn)化為電能和焦耳熱。高精度脈沖電源直流電源。廣東直流電源限流</p><p style="text-indent:25px">大功率可調(diào)直流電源。廣東直流電源限流</p><p> 當(dāng)兩組橋同步控制,使兩組整流橋得到相同的觸發(fā)角,經(jīng)過分析可得來自兩組整流橋的5次和7次諧波電流將在變壓器的一次側(cè)相互抵消。同樣17次和19次諧波電流亦相互抵消,這時(shí)網(wǎng)側(cè)的比較低次特征諧波將是n次和13次諧波,接下來就是23次和25次諧波了。其變壓器一次線電流的波形是三階梯形,更接近正弦波。[1] </p> <p> 工作原理 </p> <p> 中頻電源的工作原理為：采用三相橋式全控整流電路將交流電整流為直流電，經(jīng)電抗器平波后，成為直流電源，再經(jīng)單相逆變橋，把直流電流逆變成一定頻率（一般為1000至8000Hz）的單相中頻電流。負(fù)載由感應(yīng)線圈和補(bǔ)償電容器組成，連接成并聯(lián)諧振電路（也可串聯(lián)，一般情況下IGBT電源采用串聯(lián)諧振，當(dāng)然，IGBT電源也可采用并聯(lián)諧振）。 </p> <p> 一般情況下，可以把中頻電源的故障按照故障現(xiàn)象分為完全不能起動(dòng)和起動(dòng)后不能正常工作兩大類。作為一般的原則，當(dāng)出現(xiàn)故障后，應(yīng)在斷電的情況下對整個(gè)系統(tǒng)作***檢查，它包括以下幾個(gè)方面：廣東直流電源限流</p><p> 深圳市茂迪機(jī)電設(shè)備有限公司成立于1995年4月，是廣東省儀器儀表協(xié)會(huì)理事單位、深圳市儀器儀表行業(yè)協(xié)會(huì)理事單位，深圳市**采購中心定點(diǎn)采購單位。主要由光電事業(yè)部、物體色差部、系統(tǒng)集成部，環(huán)境測試儀器部組成。 </p> <p> 經(jīng)過多年的努力，根據(jù)中國儀器儀表市場的需求及國內(nèi)外儀器儀表行業(yè)的發(fā)展趨勢，我公司從眾多的同類產(chǎn)品中精挑細(xì)選出一些技術(shù)先進(jìn)，質(zhì)量可靠，性價(jià)比高的品牌測量儀器推薦給用戶，與日本柯尼卡美能達(dá) Konica Minolta、美國Radiant、雷云光電Rayclouds、德國Instyument Systems、日本托普康Topcon、法國ELDIM、美國藍(lán)菲Labsphere、中國臺灣茂迪、德國GMC-I高美測儀、德國GMC-I KURTH（庫爾特），TESCOM，有著緊密而***的合作聯(lián)系。 </p> <p> </p> <span style="display:none;"></span></p><br /><p>文章來源地址: 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