{"id":73,"date":"2013-04-23T16:31:01","date_gmt":"2013-04-23T08:31:01","guid":{"rendered":"http:\/\/www.jaytsang.com\/?p=73"},"modified":"2019-09-18T02:05:17","modified_gmt":"2019-09-17T18:05:17","slug":"ne5532-tl072%ef%bc%8c%e9%82%8a%e7%b2%92%e6%9b%b4%e7%a8%b1%e8%81%b7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/jaytsang.com\/?p=73","title":{"rendered":"NE5532 \/ TL072\uff0c\u908a\u7c92\u66f4\u7a31\u8077\uff1f"},"content":{"rendered":"<p>\u5169\u6b3e opamp \u90fd\u4fc2\u5e7e\u868a\u5622\uff0c\u9ede\u89e3\u6dd8\u5bf6\u5572\u5e97\u8216\u6b7b\u90fd\u8981\u7528 5532?<br \/>\n\u8a71\u8aaa\u5c0b\u65e5\u780c\u5b8c\u500b Subwoofer Amp \u4e4b\u5f8c\u767c\u89ba\u55f0\u584a\u97ff\u6dd8\u5bf6\u8cb7\u8fd4\u569f\u5605 low pass filter \u6709 DC offset \u5605\u554f\u984c\uff0c\u4eca\u65e5\u5373\u523b trace \u7ffb\u500b circuit \u51fa\u569f&#8230;\u584a\u7248\u7528 5532 \u505a\u653e\u5927\uff0c5532 \u4fc2 BJT \u8f38\u5165\uff0cbias current \u6210 200nA\uff0c\u500b\u96fb\u8def\u7121 balance network\uff0c\u63d2 BJT opamp \u5514\u51fa DC \u5c31\u602a\uff01\u97ff\u5514\u6539\u7dda\u8def\u4e4b\u4e0b\uff0c\u5176\u5be6\u63d2\u4e00\u7c92 FET \u8f38\u5165\u5605 opamp \u5df2\u7d93\u53ef\u4ee5\u89e3\u6c7a\u554f\u984c\uff01\u63db\u7c92 TL072 \u843d\u53bb\uff0c Bias current \u53ea\u6709 65pA\uff0c\u5c11\u904e 5532 \u4e09\u5343\u500d\uff01<br \/>\n\u5169\u6b3e opamp \u90fd\u4fc2\u5e7e\u868a\u5622\uff0c\u9ede\u89e3\u6dd8\u5bf6\u5572\u5e97\u8216\u6b7b\u90fd\u8981\u7528 5532? \u7686\u56e0\u5e7e\u868a\u7c92\u5605 5532 \u97ff\u97f3\u97ff\u754c\u4eab\u8ca0\u76db\u540d\uff0c\u800c TL072 \u5c31\u5187\u4e5c\u4eba\u8b58\u4f62\u56c9\uff01<\/p>\n<p><a href=\"?p=73\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-74\" alt=\"920694_183403738479160_904216307_o\" src=\"http:\/\/www.jaytsang.com\/wp-content\/uploads\/2014\/03\/920694_183403738479160_904216307_o.jpg\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/jaytsang.com\/wp-content\/uploads\/2014\/03\/920694_183403738479160_904216307_o.jpg 2048w, https:\/\/jaytsang.com\/wp-content\/uploads\/2014\/03\/920694_183403738479160_904216307_o-300x225.jpg 300w, https:\/\/jaytsang.com\/wp-content\/uploads\/2014\/03\/920694_183403738479160_904216307_o-1024x768.jpg 1024w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5169\u6b3e opamp \u90fd\u4fc2\u5e7e\u868a\u5622\uff0c\u9ede\u89e3\u6dd8\u5bf6\u5572\u5e97\u8216\u6b7b\u90fd\u8981\u7528 5532? \u8a71\u8aaa\u5c0b\u65e5\u780c\u5b8c\u500b Subwoofer Amp \u4e4b\u5f8c\u767c\u89ba\u55f0\u584a\u97ff\u6dd8\u5bf6\u8cb7\u8fd4\u569f\u5605 low pass filter \u6709 DC offset \u5605\u554f\u984c\uff0c\u4eca\u65e5\u5373\u523b trace \u7ffb\u500b circuit \u51fa\u569f&#8230;\u584a\u7248\u7528 5532 \u505a\u653e\u5927\uff0c5532 \u4fc2 BJT \u8f38\u5165\uff0cbias current \u6210 200nA\uff0c\u500b\u96fb\u8def\u7121 balance network\uff0c\u63d2 BJT opamp \u5514\u51fa DC \u5c31\u602a\uff01\u97ff\u5514\u6539\u7dda\u8def\u4e4b\u4e0b\uff0c\u5176\u5be6\u63d2\u4e00\u7c92 FET \u8f38\u5165\u5605 opamp \u5df2\u7d93\u53ef\u4ee5\u89e3\u6c7a\u554f\u984c\uff01\u63db\u7c92 TL072 \u843d\u53bb\uff0c <a class=\"more-link\" href=\"https:\/\/jaytsang.com\/?p=73\">Continue reading <span class=\"screen-reader-text\">  NE5532 \/ TL072\uff0c\u908a\u7c92\u66f4\u7a31\u8077\uff1f<\/span><span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":74,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/posts\/73"}],"collection":[{"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jaytsang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=73"}],"version-history":[{"count":6,"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/posts\/73\/revisions"}],"predecessor-version":[{"id":285,"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/posts\/73\/revisions\/285"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jaytsang.com\/index.php?rest_route=\/wp\/v2\/media\/74"}],"wp:attachment":[{"href":"https:\/\/jaytsang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=73"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jaytsang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=73"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jaytsang.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=73"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}