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你知道高頻變壓器的偏磁是什??/h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
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<p><a href="http://linhang.com.cn/"><strong>高頻變壓??/strong></a>的偏磁是指磁芯作業(yè)磁滯回線中心點(diǎn)違背零點(diǎn),正反向脈沖進(jìn)程中磁作業(yè)狀況不對(duì)稱的表??在高頻變壓器耦合的全橋電路中,功率開(kāi)關(guān)元件的飽滿壓降、存儲(chǔ)時(shí)刻的不一樣以及其它緣由都會(huì)形成電壓波形正負(fù)半波不對(duì)稱,即高頻變壓器中正負(fù)伏秒積不平??然后形成偏磁表象??/p>
<p> 偏磁是指加在變壓器兩頭的正反向脈沖電壓的伏秒乘積(伏秒??不等，然后形成變壓器磁芯的磁滯作業(yè)回線違背坐標(biāo)原點(diǎn)的表象。模仿錄音中運(yùn)用的高頻信號(hào)，能夠改進(jìn)錄音信號(hào)的精度并驅(qū)動(dòng)抹音磁頭。偏磁信號(hào)由偏磁振蕩器發(fā)作。磁性錄音進(jìn)程的偏磁有溝通偏磁和直流偏磁。偏磁能夠削減失真，能夠進(jìn)步輸出的穩(wěn)定性，對(duì)加大輸出信號(hào)的起伏也有影響??/p>
<p> 在通常的情況下跟著高頻變壓器的脈沖寬度增加,初級(jí)電流也增??若初級(jí)電流增大到必定值時(shí),封閉當(dāng)時(shí)方向的PWM脈沖輸出,則變壓器磁芯磁通和初級(jí)電流不再增大.因??只需要檢測(cè)出變壓器初級(jí)電??并以此來(lái)調(diào)整PWM控制器兩路輸出的脈寬??使變壓器初級(jí)電流控制在必定范圍內(nèi),就能夠消除變壓器磁芯偏磁所帶來(lái)的損害。電流型PWM控制法能夠有效地處理這一疑問(wèn)??/p>
<p> 供參考。想了解更多高頻變壓器的知識(shí)?？葱侣劯??/p>
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