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<p class="MsoNormal" style="MARGIN: 0in 0in 0pt;"><font size="3"><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">我曾经在七十年代中期</span><span lang="ZH-CN"><font face="Times New Roman">
</font></span><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">至八十年代初期制作过多台放大器,当时全对称互扑差动放大电路刚成为设计主流,瞬态互调失真</span><font face="Times New Roman">TIM</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">开始被重视以及大功率场效应管</span><font face="Times New Roman">MOSFET</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">和高频功率晶体管的出现使到音频放大器的设计出现百花齐放的现象,无比热闹。到了今天我还在用着当年所仿制的</span><font face="Times New Roman">Hafler DH200</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">功放。</span></font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt;"><font size="3"><font face="Times New Roman">Quad405</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">也是在七十年代中期推出的,就因为该设计不是当时所流行的全对称互扑差动放大电路就不把它放在眼里而错过了仿制它。今天看到许多的</span><font face="Times New Roman">DIY </font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">朋友们仿制它而心里痒痒的,也想弄一台来试试,于是就开始上网寻找资料。</span></font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt;"><font size="3"><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">资料显示,很多人对</span><font face="Times New Roman">405 </font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">有好评,但也有一些人说它的不足。于是最后决定不做</span><font face="Times New Roman">405</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">而做比较晚期的</span><font face="Times New Roman">Quad707</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">。</span><font face="Times New Roman">707 </font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的工作原理跟</span><font face="Times New Roman">405 </font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">差不多,</span><font face="Times New Roman">ary </font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">兄已在去年祥细的分析过了,这里不再多说。</span></font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt;"><font size="3"><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">比较</span><font face="Times New Roman">405</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">而言,</span><font face="Times New Roman">707</font><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">作了以下更改:</span></font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in; mso-list: l0 level1 lfo2; tab-stops: list .5in;"><font size="3"><span style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">1.</ |
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[分享]Quad707的改版与制作
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[分享]Quad707的改版与制作
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