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src="/skins/171904/images/eye1.png">瀏覽次數(shù)：1076</div> <div id="wwd0jzvdam" class="NyNewsDetail_Con"> <p> <span style="font-family: 宋體; font-size: 10.5pt; text-align: center; ">電子汽車衡繪圖原理草圖技巧（一）</span></p><div id="wwd0jzvdam" class="Section0"><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">1<font face="宋體">、</font></span><span id="wwd0jzvdam" class="15" style="color: rgb（0, 0, 255）; font-size: 10pt; font-family: 宋體; ">電子汽車衡</span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">原理草圖不必像正式原理圖那樣繪出所有的電氣連接和功能部件，也不必一定要給出每個(gè)部件很詳細(xì)的技術(shù)參數(shù)。原理草圖一般是手繪。</span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">2<font face="宋體">、根據(jù)參考樣電器繪制電路原理草圖的過程實(shí)際就是將實(shí)物還原為電路原理圖的過程，一般通過對電器元器件及其連接線，逐個(gè)，逐步測量繪出。例如測繪</font><font face="Times New Roman">PCB</font><font face="宋體">組件，需要掌握以下幾點(diǎn)技巧。</font></span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">1<font face="宋體">）選擇體積大、引腳多并在電路中起主要作用的元器件如集成電路、變壓器、晶體管等作為畫圖基準(zhǔn)件，然后從選擇的基準(zhǔn)件各引腳開始畫圖，以減少出錯(cuò)。</font></span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">2<font face="宋體">）若印制板上標(biāo)有元件序號，由于這些序號有特定的規(guī)則，英文字母后*阿拉伯?dāng)?shù)字相同的元件屬同一功能單元，因此畫圖時(shí)應(yīng)巧加利用。正確區(qū)分同一功能單元的元器件，是畫圖布局的基礎(chǔ)。</font></span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; ">3<font face="宋體">）如果印制板上未標(biāo)出元器件的序號，為便于分析與校隊(duì)電路，自己給元器件編號。制造廠在設(shè)計(jì)印制板排列元器件時(shí)，為使銅箔走線zui短，一般把同一功能單元的元器件相對集中布置。找到某單元其核心作用的器件后，只要順藤摸瓜就能找到同一功能單元的其他元件。</font></span><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p><p class="p0" style="text-indent:21.0000pt; margin-bottom:0pt; margin-top:0pt; text-align:justify; "><span style="mso-spacerun:'yes'; font-size:10.5000pt; font-family:'宋體'; "><o:p></o:p></span></p></div> </div> <div id="wwd0jzvdam" class="NyPrevNext"> <ul> <li><img 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