[毕业设计精品]双音门铃设计报告书

课程设计说明书（论文）课程设计题目：双音门铃设计学生姓名：*学号：*院系：*专业班级：*指导教师姓名及职称：*起止时间：2011年3月2011年6月课程设计评分：一、课题名称：双音门铃设计二、画出完整的电路图，并说明电路的工作原理：双音门铃原理图与PCB图如下图：该电路的工作原理：当按下开关，NE555计时器，4引脚于高电平，元件工作，电容C1充电，且2、6引脚达到高电平，此时输出端3为低电平，扬声器发出响声；开关松开后，电容C1放电，在2、6引脚大于1/3Vcc前，3端为低电平，扬声器工作；当放电使2、6端电平小于1/3Vcc，3端为高电平，扬声器不工作。电容C2与滑动变阻器一起控制引脚4的状态，使置零输入端呈不同的临界电压，从而控制扬声器响音时间的长短。当电路转换时，2、6端电压不同，使得输出端3低电平电压也不同，从而实现扬声器的双音。三、总结设计电路和方案的优缺点，指出课题的核心及实用价值，提出改进、意见和展望：设计电路和方案的优缺点：1、电路简单可行，选择得当，适合刚刚开始学习电路制板的学生像我g1216。2、g6492g16850的时间和g17839g12255g4445g6502得当。g16850g20076的g7692g5527g2462实g11004g1227g1552：1.g10099g5725g6175工g9950g19189g5132g11004工g1867的使g11004方g8873。2.g3534g7424g6496g6581g6175工电g9901g19093的g9950g6521g6228g7427，g14033g3827g10432g12447的g4448g6116简单电g4388g1147g2709的g4445g16025与g9950g6521。g10099g5725电g4388g1147g2709的g4445g16025工g14414的g8981g12255。3.g14033g3827g7693g6466电路原理图，元器件实g10301设计g5194制作小工g14414g2709。4.g10099g5725g5132g11004电g4388器件的g12879g2047、g3423g2507、g16280g7696、g5627g14033g2462g1866使g11004g14551g3272，g14033g7609g19417g7389关的电g4388器件图g1082。5.g14033g3827g8503g11842g16794g2047和选g11004g5132g11004的电g4388器件。g1114g16311电g4388g1147g2709的g9950g6521、g16855g16809与g13512g1474方g8873。四、列出系统需要的元器件：电阻3g1022，电g16311电容2g1022，g10955g10267电容2g1022，g7509g5627电容2g1022，NE555Ng14467g102671g3371，电g1313器1g1022，按g192021g1022，g6566g190362g1022五、收获、体会；g7424g1166学习双音门铃的制作g7171从g16760g16794元件开始的，刚刚g990g12544一g14422g16850时，从g7044g16760g16794g1114电阻，g11705g17959g1114电阻的g16847g6980g7389g11464g7643g8873，g7003g4395g12538g2507g8873，g14406g7643g8873，g6980g11733g8873。而且，学习g14406g7643g8873的时g1517g17836g6238g18039g1022g14406g10627g20080g14406与g6980g1552g4557g10043g15932g13984下g7481g1114，到现在g17836g16772得g7849g13430g8237g21656g13523g15025g13055g9796g11345g21669g18341g19146g7092g14406，g17837g1135g12879g3423。g6521g11540，g16760g16794g1114电阻器，g2010g2047g7389电阻，可变电阻，敏感电阻。到g1114电容器，电容器可g2010为：一般电容，g7509g5627电容，微g16855电容，电联可变电容，双联可变电容。到g1114电感器，一般电感器，g7389磁g5527或g7389g19093g5527电感器，可g16855电感器。g17836g16760g16794g1114三g7509管。到g1114g12544二g14422g16850，我g1216g11004万g11004g15932动g6175测量g1114电阻的阻g1552，学会g1114g14406g7643g8873g16847电阻的阻g1552。使g11004万g11004g15932判g2047g7509g5627电容的g7509g5627，和三g7509管的Bg7509、Cg7509、Eg7509。g18039次g9950一g3371万g11004板，g7171我g12544一次g6521触电g9950g19093，动g6175去g9950东西，尽管g9950的板g5194不g7171特g2047漂亮，但g17836g7171挺g7389g6116就感的。g7424g1166g6521触g1114使g11004铜线，然后使g11004g9901g19093g9950铜线到万g11004板g990。学习g1114一g1022软件ProtelDXP2004软件，从零开始学习ProtelDXP2004。g17836g16772得画原理图，就g7171画g1114g18039g1022双音门铃的原理图，一g1022一g1022软件地找元件，g7389时g17836找不到某g1135元件，到后g7481g11705g17959g1114怎么样可以找到就g7171通过自己画出g7481就可以g1114。g6521g11540g7171学习g1114画元件，当时画g11142g1022电阻，2g1022电容，2g1022g7509g5627电容，2g1022三g7509管，g17836创建g1114属于自己的元件库。g6521g11540g7171画PCB图，g6238之前画的g18039g1022双音门铃的原理图转变g6116PCB图。再后g7481就画g1114PCB元件，画g11142g1022电阻，2g1022电容，2g1022g7509g5627电容，2g1022三g7509管，g17836创建g1114属于自己的PCB元件库。g6521到g1114铜板时，真的挺兴奋的，g11004砂纸很g11004力地g6238铜板擦亮，然后g6238印g7389双音门铃的油纸和铜板黏在一起，过g1114一g1022机器就g6238油纸g990的碳印到到g1114铜板g990，g6521g11540使g11004氯化g19093g6238铜去掉，只剩下双音门铃的电路图，g6521g11540使g11004砂纸，在水龙头下g6238铜板g990的碳去掉，只剩下电路图的铜，g6521g11540g7171钻孔，使g11004的g7171一g1022钻孔机，g6238铜板g990的电路图的孔都钻空，g6521g11540g6238电阻3g1022，电g16311电容2g1022，g10955g10267电容2g1022，g7509g5627电容2g1022，NE555Ng14467g102671g3371，电g1313器1g1022，按g192021g1022，g6566g190362g1022g9950到电路板g990，g18039g1022双音门铃就制作出g7481g1114。虚焊、开路、短路检测a1a0a2a3a4a5a6a7a8a9a10a11a8a9a13a14a4a10a12a13a16a15a17a18a17a4a19a20a21a22a23a14a24a4a25a26a27a28a13a30a29a31a32a8a34a35a5a34a36a5a33a37a38a40a32a8a8a39a20a8a41a42a4a43a44a45a46a47a4a48a49a9a50a51a52a54a20a40a55a53a57a19a56a58a59a13a8a39a58a20a60a61a62a13a64a60a63a65a66a67a68a8a41a58a13a44a45a46a47a42a8a41a63a65a49a9a69a40a32a8a50a71a15a70a72a8a9a73a20a8a9a74a75a51a76a13a78a73a8a9a77a79a80a27a51a69a46a81a20a40a35a5a50a70a72a8a9a20a82a83a13a85a86a84a82a87a51a88a89a49a20a8a39a42a8a39a34a8a39a42a90a91a78a73a90a91a42a90a91a92a8a60a49a9a68a93a94a81a40PCBa96a95a97a98a99a100a101a102a103a104a105a106a107a108a109a110a111a96a112a104a113a114a115a116a117a118a119a120a104a121a122a107a123a124a114a111a120a111a125a126a127a110a111a96a112a104a120a111a128a129a111a128a130a117a125a126a107a131a132a133a134a102a110a135a104a136a137a138a139a140a141a142a119a1271a143a144a145a146a144a147a148a149a145a146a150a151a152a153a154a155a156a157a158a159a160a161a162a163a152a164a165a166a167a152a168a158a169a170a171a172a173a174a175a176a177a178a179a180a181a182a183a184a185a186a187a179a180JPa1741a188a174a189a190a191a192a193a189a181a194a172a173a195a196a175a176a177a174a197a198a199a177a182Ra2001a201a202Ra20010a177a187a203a204a181a171a205a206a173a207a208a182a184a209a174a210a173a207a211a212JPa1741a188a213a174a189a214a201a202a215a216a174a217a207a218a188a213a187a219a220a205a221a173a207a212a196a2221a188a223a224a174a225a226a213a181a227a228a229a187a172a230a216a2310a181a182a232a172a173a233a207a234a195a235a1960a174a236a237a187a238a239a193a189a201a202a240a225a241a226a181a242a215a189a190a243a244a245a246a189a212a1812a247a248a249a250a249a251a252a249a250a249a251a253a254a255a115a0a1a2a3a13a18a2a4a5a6a7a8a13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