由555集成定时器构成的NE555秒脉冲发生器 为什么我按网上T=Ln2(R1+2R2)×C1给的公式连出来不是一秒？ 用555做秒脉冲波形是这样的对吗？
\u8c01\u80fd\u544a\u8bc9\u6211\u7528555\u5b9a\u65f6\u5668\u4ea7\u751f\u79d2\u8109\u51b2\u7684\u53c2\u6570\u548c\u539f\u7406\u539f\u7406\u5c31\u662f\u76f4\u6d41\u7535\u9707\u8361\u540e\u5347\u538b,\u6bd4\u5982\u8bf41\u4e2a\u5c0f\u529f\u7387\u7535\u68cd,\u5229\u75286V-12V\u76f4\u6d41\u7535\u6e90\u53ef\u4ea7\u751f\u4e00\u79cd\u9ad8\u538b\u8109\u51b2\u3002\u7535\u8def\u4e2d\u4e09\u6781\u7ba1Q1\u3001Q2\u6784\u6210\u4e86\u4e00\u632f\u8361\u5668\uff0c\u4ea7\u751f\u9891\u7387\u4e3a3Hz\u7684\u76f4\u6d41\u8109\u51b2\u7535\u538b\u3002
\u5e76\u8f93\u5165\u53d8\u538b\u5668\u6bd4\u4e3a6V\uff1a240V\u5347\u538b\u5668\u7684\u521d\u7ea7\u7ebf\u5708\uff0c\u5728\u6bcf\u4e2a\u8109\u51b2\u7ed3\u675f\u65f6\uff0c\u76f8\u5e94\u5730\u5728\u53d8\u538b\u5668\u7684\u6b21\u7ea7\u7ebf\u5708\u4ea7\u751f\u4e00\u9ad8\u7535\u538b\u3002\u8109\u51b2\u7684\u91cd\u590d\u9891\u7387\u53ef\u901a\u8fc7\u9009\u62e9C2\u3001R1\u503c\u8fdb\u884c\u8c03\u6574\u3002
NE555\u7684\u7535\u6c14\u53c2\u6570\uff0c\u5176\u4ed6\u4e0d\u540c\u89c4\u683c\u7684555\u5b9a\u65f6\u5668\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u53c2\u6570\u3002\u3002
\u4f9b\u7535\u7535\u538b(VCC)\uff1a4.5-16 V
\u989d\u5b9a\u5de5\u4f5c\u7535\u6d41(VCC= +5 V)\uff1a3-6 mA
\u989d\u5b9a\u5de5\u4f5c\u7535\u6d41(VCC= +15 V) \uff1a10-15 mA
\u6700\u5927\u8f93\u51fa\u7535\u6d41\uff1a200 mA
\u6700\u5927\u529f\u8017\uff1a600mW
\u6269\u5c55\u8d44\u6599
555\u5b9a\u65f6\u5668\u53ef\u5de5\u4f5c\u5728\u4e09\u79cd\u5de5\u4f5c\u6a21\u5f0f\u4e0b\uff1a
1\u3001\u5355\u7a33\u6001\u6a21\u5f0f
\u5728\u5355\u7a33\u6001\u5de5\u4f5c\u6a21\u5f0f\u4e0b\uff0c555\u5b9a\u65f6\u5668\u4f5c\u4e3a\u5355\u6b21\u89e6\u53d1\u8109\u51b2\u53d1\u751f\u5668\u5de5\u4f5c\u3002\u5f53\u89e6\u53d1\u8f93\u5165\u7535\u538b\u964d\u81f3VCC\u76841/3\u65f6\u5f00\u59cb\u8f93\u51fa\u8109\u51b2\u3002\u8f93\u51fa\u7684\u8109\u5bbd\u53d6\u51b3\u4e8e\u7531\u5b9a\u65f6\u7535\u963b\u4e0e\u7535\u5bb9\u7ec4\u6210\u7684RC\u7f51\u7edc\u7684\u65f6\u95f4\u5e38\u6570\u3002\u5f53\u7535\u5bb9\u7535\u538b\u5347\u81f3VCC\u76842/3\u65f6\u8f93\u51fa\u8109\u51b2\u505c\u6b62\u3002
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2\u3001\u53cc\u7a33\u6001\u6a21\u5f0f
\u53cc\u7a33\u6001\u5de5\u4f5c\u6a21\u5f0f\u4e0b\u7684555\u82af\u7247\u7c7b\u4f3c\u57fa\u672cRS\u89e6\u53d1\u5668\u3002\u5728\u8fd9\u4e00\u6a21\u5f0f\u4e0b\uff0c\u89e6\u53d1\u5f15\u811a\uff08\u5f15\u811a2\uff09\u548c\u590d\u4f4d\u5f15\u811a\uff08\u5f15\u811a4\uff09\u901a\u8fc7\u4e0a\u62c9\u7535\u963b\u63a5\u81f3\u9ad8\u7535\u5e73\uff0c\u9608\u503c\u5f15\u811a\uff08\u5f15\u811a6\uff09\u88ab\u76f4\u63a5\u63a5\u5730\u3002
\u63a7\u5236\u5f15\u811a\uff08\u5f15\u811a5\uff09\u901a\u8fc7\u5c0f\u7535\u5bb9\uff080.01\u52300.1\u03bcF\uff09\u63a5\u5730\uff0c\u653e\u7535\u5f15\u811a\uff08\u5f15\u811a7\uff09\u6d6e\u7a7a\u3002\u6240\u4ee5\u5f53\u5f15\u811a2\u8f93\u5165\u9ad8(\u6709\u8bef\u5e94\u4e3a\u4f4e)\u7535\u538b\u65f6\u8f93\u51fa\u7f6e\u4f4d\uff0c\u5f53\u5f15\u811a4\u63a5\u5730\u65f6\u8f93\u51fa\u590d\u4f4d\u3002
3\u3001\u65e0\u7a33\u6001\u6a21\u5f0f
\u65e0\u7a33\u6001\u5de5\u4f5c\u6a21\u5f0f\u4e0b555\u5b9a\u65f6\u5668\u53ef\u8f93\u51fa\u8fde\u7eed\u7684\u7279\u5b9a\u9891\u7387\u7684\u65b9\u6ce2\u3002\u7535\u963bR1\u63a5\u5728VCC\u4e0e\u653e\u7535\u5f15\u811a(\u5f15\u811a7)\u4e4b\u95f4\uff0c\u53e6\u4e00\u4e2a\u7535\u963b(R2)\u63a5\u5728\u5f15\u811a7\u4e0e\u89e6\u53d1\u5f15\u811a\uff08\u5f15\u811a2\uff09\u4e4b\u95f4\uff0c\u5f15\u811a2\u4e0e\u9608\u503c\u5f15\u811a\uff08\u5f15\u811a6\uff09\u77ed\u63a5\u3002
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1\uff0e\u79d2\u4fe1\u53f7\u7684\u53d1\u751f\u7535\u8def
\u79d2\u4fe1\u53f7\u53d1\u751f\u7535\u8def\u7531\u96c6\u6210\u7535\u8def555\u5b9a\u65f6\u5668\u4e0eRC\u7ec4\u6210\u7684\u591a\u8c10\u632f\u8361\u5668\u6784\u6210\u3002\u9700\u8981\u7684\u82af\u7247\u6709\u96c6\u6210\u7535\u8def555\u5b9a\u65f6\u5668\uff0c\u8fd8\u6709\u7535\u963b\u548c\u7535\u5bb9\u3002\u4e0b\u56fe\u4e3a\u5176\u7535\u8def\u56fe\uff1a
\u632f\u8361\u7535\u8def\u662f\u6570\u5b57\u949f\u7684\u6838\u5fc3\u90e8\u5206\uff0c\u5b83\u7684\u9891\u7387\u548c\u7a33\u5b9a\u6027\u76f4\u63a5\u5173\u7cfb\u5230\u8868\u7684\u7cbe\u5ea6\u3002\u56e0\u6b64\u9009\u62e9555\u5b9a\u65f6\u5668\u6784\u6210\u7684\u591a\u8c10\u632f\u8361\u5668\uff0c\u5176\u4e2d\u7535\u5bb9C1\u4e3a47\u5fae\u6cd5\uff0cC2\u4e3a0.01\u5fae\u6cd5\uff0c\u4e24\u4e2a\u7535\u963bR1=R2=10K\u6b27\u59c6\u3002\u6b64\u65f6\u5728\u7535\u8def\u7684\u8f93\u51fa\u7aef\u5c31\u5f97\u5230\u4e86\u4e00\u4e2a\u5468\u671f\u6027\u7684\u77e9\u5f62\u6ce2\uff0c\u5176\u632f\u8361\u9891\u7387\u4e3a\uff1a
f=1.43/[(R1+2R2)C] (3-1)\u7531\u516c\u5f0f\uff083-1\uff09\u4ee3\u5165R1 \uff0cR2\u548cC\u7684\u503c\u5f97\uff0cf=1Hz\u3002\u5373\u5176\u8f93\u51fa\u9891\u7387\u4e3a1Hz\u7684\u77e9\u5f62\u6ce2\u4fe1\u53f7
绛旓細瀹氭椂鍣∟E555P 鍦ㄥ簱TI analog timer circit.Intlib涓 鐢甸樆 AXIAL 鏃犳瀬鎬х數瀹 RAD 鐢佃В鐢靛 RB- 鐢典綅鍣 VR 浜屾瀬绠 DIODE 涓夋瀬绠 TO 鐢垫簮绋冲帇鍧78鍜79绯诲垪 TO-126H鍜孴O-126V 鍦烘晥搴旂 鍜屼笁鏋佺涓鏍 鏁存祦妗 D-44 D-37 D-46 鍗曟帓澶氶拡鎻掑骇 CON SIP 鍙屽垪鐩存彃鍏冧欢 DIP 鏅舵尟 XTAL1 鐢甸樆:RES1,...
绛旓細鏄釜瀹屾暣鐨勬澘绾у叏鏂逛綅鐢靛瓙璁捐绯荤粺锛屽畠鍖呭惈浜嗙數璺師鐞嗗浘缁樺埗銆佹ā鎷熺數璺笌鏁板瓧鐢佃矾娣峰悎淇″彿浠跨湡銆佸灞傚嵃鍒剁數璺澘璁捐锛堝寘鍚嵃鍒剁數璺澘鑷姩甯冪嚎锛夈佸彲缂栫▼閫昏緫鍣ㄤ欢璁捐銆佸浘琛ㄧ敓鎴愩佺數瀛愯〃鏍肩敓鎴愩佹敮鎸佸畯鎿嶄綔绛夊姛鑳斤紝骞跺叿鏈塁lient/Server锛堝鎴/鏈嶅姟鍣級浣撶郴缁撴瀯锛屽悓鏃惰繕鍏煎涓浜涘叾瀹冭璁¤蒋浠剁殑鏂囦欢鏍煎紡锛屽ORCAD锛...
绛旓細瀹氭椂鍣∟E555P 鍦ㄥ簱TI analog timer circit.Intlib涓 鐢甸樆 AXIAL 鏃犳瀬鎬х數瀹 RAD 鐢佃В鐢靛 RB- 鐢典綅鍣 VR 浜屾瀬绠 DIODE 涓夋瀬绠 TO 鐢垫簮绋冲帇鍧78鍜79绯诲垪 TO-126H鍜孴O-126V 鍦烘晥搴旂 鍜屼笁鏋佺涓鏍 鏁存祦妗 D-44 D-37 D-46 鍗曟帓澶氶拡鎻掑骇 CON SIP 鍙屽垪鐩存彃鍏冧欢 DIP 鏅舵尟 XTAL1 鐢甸樆:RES1,...
绛旓細LM567/LM567C "閿佺浉鐜煶棰戣瘧鐮佸櫒 "LM741 "杩愮畻鏀惧ぇ鍣 "LM831 "鍙屼綆鍣０闊抽鍔熺巼鏀惧ぇ鍣 "LM833 "鍙屼綆鍣０闊抽鏀惧ぇ鍣 "LM8365 "鍙瀹氭椂LED鐢靛瓙閽熺數璺 "MAX038 0.1Hz-20MHz鍗曠墖鍑芥暟鍙戠敓鍣 MAX232 "5V鐢垫簮澶氶氶亾RS232椹卞姩鍣/鎺ユ敹鍣 "MC1403 "2.5V绮惧瘑鐢靛帇鍩哄噯鐢佃矾 "MC1404 5.0v/6.25v/...
绛旓細鍙橀鍣ㄦ崯鑰 KW 35 15. 绯荤粺鎬绘崯鑰 KW 81 浜銆佸彉棰戝櫒鐢佃矾鏋勬垚 1.涓荤數璺瀯鎴 濡傚浘琛ㄧずTMdrive-MV(...鐢遍泦鎴鐢佃矾鍜岀數瀛愰儴浠鏋勬垚鐨鍗板埛鐢佃矾鏉块渶瑕佸姞浠ヤ繚鎶,浠ュ厤鍙楀埌灏樺焹銆佽厫铓鎬ф皵浣撱佹俯搴︾瓑鐨勫奖鍝嶃傚洜姝,搴...(閿佺浉鐜)鐢垫簮閿欒 TL_F4 :浼犺緭鏁呴殰4-椹卞姩鍒伴┍鍔ㄦ晠闅 PRE_CTT_F :鍙樻崲鍣ㄩ鍏呯數鎺ヨЕ鍣ㄩ敊璇 TLNE_...
绛旓細瀹氭椂鍣∟E555P 鍦ㄥ簱TI analog timer circit.Intlib涓 鐢甸樆 AXIAL 鏃犳瀬鎬х數瀹 RAD 鐢佃В鐢靛 RB- 鐢典綅鍣 VR 浜屾瀬绠 DIODE 涓夋瀬绠 TO 鐢垫簮绋冲帇鍧78鍜79绯诲垪 TO-126H鍜孴O-126V 鍦烘晥搴旂 鍜屼笁鏋佺涓鏍 鏁存祦妗 D-44 D-37 D-46 鍗曟帓澶氶拡鎻掑骇 CON SIP 鍙屽垪鐩存彃鍏冧欢 DIP 鏅舵尟 XTAL1 鐢甸樆:RES1,...
绛旓細1銆佹壘涓涓89C51璐寸墖灏佽鐨勮鏍间功銆2銆乼ools-ipc footprint wizard銆3銆佹牴鎹鏍间功瑕佹眰閫夋嫨灏佽鐨勮姱鐗囩被鍨嬨4銆 鏍规嵁灏佽灏哄濉啓鏁版嵁1銆5銆 璁剧疆鑺墖鏁ｇ儹鍖哄煙澶у皬銆6銆佹牴鎹蒋浠舵彁渚涚殑姝ラ 涓鐩寸偣鍑籲ext涓嬶紝鏈鍚庣偣鍑籪inish瀹屾垚 缁撴灉濡備笅銆
绛旓細瀹氭椂鍣∟E555P 鍦ㄥ簱TI analog timer circit.Intlib涓 鐢甸樆 AXIAL 鏃犳瀬鎬х數瀹 RAD 鐢佃В鐢靛 RB- 鐢典綅鍣 VR 浜屾瀬绠 DIODE 涓夋瀬绠 TO 鐢垫簮绋冲帇鍧78鍜79绯诲垪 TO-126H鍜孴O-126V 鍦烘晥搴旂 鍜屼笁鏋佺涓鏍 鏁存祦妗 D-44 D-37 D-46 鍗曟帓澶氶拡鎻掑骇 CON SIP 鍙屽垪鐩存彃鍏冧欢 DIP 鏅舵尟 XTAL1 鐢甸樆:RES1,...
绛旓細1銆佹鏌ヨ緭鍏ョ數婧愭槸鍚︾數鍘嬭繃楂 2銆佸欢闀垮噺閫熸椂闂 3銆佸仠鏈烘柟寮忚涓鸿嚜鐢卞仠杞﹀嵆鍙
