电桥法测电阻的公式是什么 电桥法测电阻的主要优点有哪些

\u7535\u6865\u6cd5\u6d4b\u7535\u963b\u539f\u7406\uff1f

\u5982\u4e0b\u56fe\uff0c\u5047\u8bbe\u56db\u4e2a\u7535\u963b\u56fa\u5b9a\uff0c\u5f53s\u95ed\u5408\u65f6\uff0c\u82e5\u6ee1\u8db3\uff1a\u201cR3*R2=R1*R4\u201d\uff0c\u5373\u5bf9\u89d2\u7684\u7535\u963b\u4e58\u79ef\u76f8\u7b49\uff0c\u5219\u6b64\u65f6Uad\u7b49\u4e8e0\uff0c\u5c31\u662fad\u95f4\u6ca1\u6709\u7535\u538b\u3002\u5229\u7528\u8fd9\u4e2a\u539f\u7406\uff0c\u5f53\u7b49\u5f0f\u4e24\u8fb9\u56db\u4e2a\u91cf\u4e2d\u7684\u4e00\u4e2a\u4e3a\u672a\u77e5\u91cf\u7684\u65f6\u5019\uff0c\u5982\u679c\u8c03\u8282\u5176\u4f59\u4e09\u4e2a\u7535\u963b\u7684\u503c\u80fd\u4f7f\u5f97\u7b49\u5f0f\u6210\u7acb\uff0c\u90a3\u4e48\u7528\u516c\u5f0f\u5c31\u53ef\u4ee5\u5f97\u5230\u672a\u77e5\u91cf\u3002
\u4f46\u662f\u5b9e\u9645\u4e0a\u53ea\u8981\u7b49\u5f0f\u4e24\u8fb9\u5404\u6709\u4e00\u4e2a\u53ef\u4ee5\u8c03\u8282\u7684\u53ef\u53d8\u7535\u963b\uff0c\u90a3\u4e48\u53e6\u5916\u4e24\u4e2a\u7535\u963b\u6709\u4e00\u4e2a\u662f\u5b9a\u503c\uff0c\u5219\u4f59\u4e0b\u7684\u53e6\u5916\u4e00\u4e2a\u5fc5\u7136\u53ef\u4ee5\u5f97\u5230\u3002\u7528\u8fd9\u4e2a\u539f\u7406\u53ef\u4ee5\u505a\u6210\u7535\u963b\u6d4b\u91cf\u7bb1\u3002\u800c\u8fd9\u4e2a\u539f\u7406\u7528\u7684\u5c31\u662f\u201c\u7535\u6865\u201d\u7684\u6982\u5ff5\uff0c\u6216\u8005\u8bf4\u201c\u5e73\u8861\u7535\u6865\u201d\u7684\u6982\u5ff5\u3002

\u6269\u5c55\u8d44\u6599\uff1a
\u5e38\u7528\u7684\u6709\u60e0\u65af\u901a\u7535\u6865\u548c\u51ef\u5c14\u6587\u7535\u6865\u3002
1\u3001\u60e0\u65af\u901a\u7535\u6865
\u60e0\u65af\u901a\u7535\u6865\u6d4b\u7535\u963b
\u7535\u6865\u662f\u7528\u6bd4\u8f83\u6cd5\u6d4b\u91cf\u7269\u7406\u91cf\u7684\u7535\u78c1\u5b66\u57fa\u672c\u6d4b\u91cf\u4eea\u5668\uff0c\u7535\u6865\u7684\u79cd\u7c7b\u5f88\u591a\uff0c \u6d4b\u91cf\u4e2d\u7b49\u963b\u503c\uff0810\uff5e10^6\u6b27\u59c6\uff09\u7684\u7535\u963b\u8981\u7528\u60e0\u65af\u767b\u5355\u81c2\u7535\u6865\u8fdb\u884c\u6d4b\u91cf\uff1b\u82e5\u8981\u6d4b\u91cf\u66f4\u5927\u963b\u503c\u7684\u7535\u963b\uff0c\u4e00\u822c\u91c7\u7528\u9ad8\u7535\u963b\u7535\u6865\u6216\u5146\u6b27\u8868\uff1b\u800c\u8981\u6d4b\u91cf\u963b\u503c\u8f83\u5c0f\u7684\u7535\u963b\uff0c\u4e00\u822c\u91c7\u7528\u53cc\u81c2\u7535\u6865\uff08\u5f00\u5c14\u6587\u7535\u6865\uff09\u3002
2\u3001\u51ef\u5c14\u6587\u7535\u6865
\u51ef\u5c14\u6587\u7535\u6865\u53c8\u79f0\u201c\u53cc\u81c2\u7535\u6865\u201d\u3002\u6d4b\u91cf10^(-6)~10^2\u6b27\u59c6\u4f4e\u7535\u963b\u7684\u76f4\u6d41\u7535\u6865\u3002\u56fe\u4e2dR\u662f\u8de8\u7ebf\u7535\u963b(\u5305\u62ecRx\u3001Rs\u4e24\u7535\u963b\u5668\u95f4\u7684\u63a5\u7ebf\u7535\u963b\u3001\u63a5\u89e6\u7535\u963b\u53ca\u5185\u90e8\u8fde\u63a5\u7ebf\u7535\u963b)\uff0cRs\u662f\u6807\u51c6\u7535\u963b\u3002
3\u3001\u5355\u81c2\u7535\u6865\u3001\u53cc\u81c2\u7535\u6865
\u5355\u81c2\u7535\u6865\uff1a\u5373\u53ea\u6709\u4e00\u4e2a\u7535\u963b\u662f\u5f85\u6c42\u6216\u672a\u77e5\u6216\u53d8\u5316\u7684\uff08\u4e0d\u540c\u7684\u7528\u9014\u6216\u9886\u57df\uff09\uff1b
\u53cc\u81c2\u7535\u6865\uff1a\u5373\u6709\u4e24\u4e2a\u7535\u963b\u662f\u5f85\u6c42\u6216\u672a\u77e5\u6216\u53d8\u5316\u7684\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-\u7535\u6865

\u4e00\u3001 \u4ece\u539f\u7406\u4e0a\u770b\uff0c\u5b83\u66f4\u7cbe\u786e\u3002
1\u3001 \u907f\u5f00\u4e86\u7535\u6e90\u968f\u65f6\u95f4\u53d8\u5316\u9020\u6210\u7684\u8bef\u5dee\u3002\u4e00\u4e2a\u4e25\u8c28\u7684\u79d1\u5b66\u5b9e\u9a8c\u4e00\u822c\u662f\u8981\u91cd\u590d\u64cd\u4f5c\u83b7\u5f97\u591a\u4e2a\u6d4b\u91cf\u503c\uff0c\u770b\u6709\u65e0\u5f02\u7136\u540e\u6c42\u5747\u503c\u7684\u3002\u8fd9\u5c31\u8981\u5728\u4e00\u4e2a\u6bb5\u65f6\u95f4\u5185\u5b8c\u6210\u3002\u800c\u6211\u4eec\u5e38\u7528\u7684\u5316\u5b66\u7535\u6e90\u5982\u5e72\u7535\u6c60\u3001\u94c5\u9178\u84c4\u7535\u6c60\u7b49\uff0c\u5176\u5b9e\u9645\u7535\u538b\u503c\u662f\u4f1a\u968f\u65f6\u95f4\u53d8\u5316\u7684\u3002\u8fd9\u5c31\u9020\u6210\u4e86\u8bef\u5dee\u3002\u800c\u7535\u6865\u6cd5\u6d4b\u91cf\u8303\u56f4\u907f\u5f00\u4e86\u7535\u6e90\uff0c\u662f\u4e00\u5927\u4f18\u70b9\u3002
2\u3001 \u907f\u5f00\u7535\u6d41\u8868\u5206\u538b\u3001\u7535\u538b\u8868\u5206\u6d41\u3001\u8fc7\u591a\u5bfc\u7ebf\u5206\u538b\u7b49\u95ee\u9898\u3002\u82e5\u8981\u7cbe\u786e\u6d4b\u51fa\u7535\u6d41\u8868\u3001\u7535\u538b\u8868\u7684\u5206\u503c\u60c5\u51b5\u662f\u4e0d\u73b0\u5b9e\u7684\u3002
\u4e8c\u3001 \u8fbe\u5230\u76f8\u540c\u6548\u679c\u4eea\u5668\u66f4\u4fbf\u5b9c\u3001\u6613\u9009\u3002
\u6d4b\u91cf\u7cbe\u51c6\uff0c\u9700\u8981\u539f\u7406\u6b63\u786e\u5e76\u4e14\u4eea\u5668\u8fbe\u5230\u7cbe\u5ea6\u8981\u6c42\u3002\u4f0f\u5b89\u6cd5\u82e5\u8981\u8003\u8651\u7535\u6d41\u8868\u5206\u538b\u3001\u7535\u538b\u8868\u5206\u6d41\uff0c\u5c31\u6709\u5f88\u5927\u7684\u8ba1\u7b97\u91cf\uff0c\u9700\u7528\u4e00\u4e2a\u5c0fCPU\uff0c\u8fd9\u5c31\u589e\u52a0\u4e86\u5f88\u9ad8\u7684\u8d39\u7528\u3002
\u800c\u7535\u6865\u4e2dR1\u548cR2\u56e0\u662f\u76f8\u9664\u7684\uff0c\u53ea\u8981\u7528\u76f8\u8fd1\u7cbe\u786e\u5ea6\u5730\u7535\u963b\u5668\uff0c\u5c31\u80fd\u51cf\u5c0f\u76f8\u5bf9\u8bef\u5dee\u3002
\u4e09\u3001 \u66f4\u4fbf\u4e8e\u7cbe\u786e\u8ba1\u7b97\u3002
\u82e5\u7535\u6d41\u8868\u5916\u63a5\u6cd5\uff0cR=U*Rv/(I*Rv-U)\u3002\u5176\u4e2dRv\u8fd8\u9700\u6d4b\u7b97\u3002
\u800c\u7535\u6865\u6cd5Rx=R2*R3/R1\uff0c\u7b80\u4fbf\u591a\u4e86\u3002\u82e5\u4f7fR1=R2\uff0c\u5219Rx=R3\uff0c\u53ef\u76f4\u63a5\u6d4b\u53d6\u3002

\u6269\u5c55\u8d44\u6599
\u5047\u8bbe\u56db\u4e2a\u7535\u963b\u56fa\u5b9a\uff0c\u5f53s\u95ed\u5408\u65f6\uff0c\u82e5\u6ee1\u8db3\uff1a\u201cR3*R2=R1*R4\u201d\uff0c\u5373\u5bf9\u89d2\u7684\u7535\u963b\u4e58\u79ef\u76f8\u7b49\uff0c\u5219\u6b64\u65f6Uad\u7b49\u4e8e0\uff0c\u5c31\u662fad\u95f4\u6ca1\u6709\u7535\u538b\u3002
\u5229\u7528\u8fd9\u4e2a\u539f\u7406\uff0c\u5f53\u7b49\u5f0f\u4e24\u8fb9\u56db\u4e2a\u91cf\u4e2d\u7684\u4e00\u4e2a\u4e3a\u672a\u77e5\u91cf\u7684\u65f6\u5019\uff0c\u5982\u679c\u8c03\u8282\u5176\u4f59\u4e09\u4e2a\u7535\u963b\u7684\u503c\u80fd\u4f7f\u5f97\u7b49\u5f0f\u6210\u7acb\uff0c\u90a3\u4e48\u7528\u516c\u5f0f\u5c31\u53ef\u4ee5\u5f97\u5230\u672a\u77e5\u91cf\u3002
\u4f46\u662f\u5b9e\u9645\u4e0a\u53ea\u8981\u7b49\u5f0f\u4e24\u8fb9\u5404\u6709\u4e00\u4e2a\u53ef\u4ee5\u8c03\u8282\u7684\u53ef\u53d8\u7535\u963b\uff0c\u90a3\u4e48\u53e6\u5916\u4e24\u4e2a\u7535\u963b\u6709\u4e00\u4e2a\u662f\u5b9a\u503c\uff0c\u5219\u4f59\u4e0b\u7684\u53e6\u5916\u4e00\u4e2a\u5fc5\u7136\u53ef\u4ee5\u5f97\u5230\u3002\u7528\u8fd9\u4e2a\u539f\u7406\u53ef\u4ee5\u505a\u6210\u7535\u963b\u6d4b\u91cf\u7bb1\u3002\u800c\u8fd9\u4e2a\u539f\u7406\u7528\u7684\u5c31\u662f\u201c\u7535\u6865\u201d\u7684\u6982\u5ff5\uff0c\u6216\u8005\u8bf4\u201c\u5e73\u8861\u7535\u6865\u201d\u7684\u6982\u5ff5\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u7535\u6865

Rx=(R/2R1)R



  • 楂樹腑鐢垫ˉ娉曟祴鐢甸樆鍘熺悊姹傞珮浜鸿В绛
    绛旓細寰堟樉鐒禦鍜孯X鍙互涓嶇瓑鍟婏紒姣斿R=2,R1=3,RX=4,R2=6灏卞彲浠ユ弧瓒砇*R2=R1*RX銆鐢垫ˉ娉曟祴鐢甸樆鐨瀹炶川鏄鐢垫祦璁$殑涓ょ娌℃湁鐢靛娍宸紝娴嬮噺鏃跺彧鐪嬪畠鍋忎笌涓嶅亸锛岃繖灏辫姹傜數娴佽闈炲父鐏垫晱浜嗐傚啀灏辨槸涓浠涔浼氭弧瓒抽偅涓叧绯诲紡銆傞鍏堝彲浠ュ皢鐢佃矾鐪嬫垚鏄疉-B-D锛堜互涓嬬畝绉癚绾匡級鍜孉-C-D锛堜互涓嬬畝绉癢绾匡級鐨勪竴涓苟鑱...
  • 鐢垫ˉ骞宠 鍏紡
    绛旓細鐢垫ˉ骞宠 鍏紡鐨勫簲鐢 鐢垫ˉ骞宠 鍏紡骞挎硾搴旂敤浜庣數闃诲拰瀵间綋鐨勬祴閲忥紝鐗瑰埆鏄湪绉戠爺瀹為獙涓備緥濡傦紝鍙互浣跨敤鐢垫ˉ骞宠 鏂规硶鏉ユ祴閲忛噾灞炴潗鏂欑殑鐢甸樆鐜囥佹娴嬬數璺腑鐨勮繛鎺ラ棶棰樼瓑銆傛澶栵紝鍦ㄥ尰瀛﹂鍩熶腑涔熸湁涓浜涘熀浜庣數妗ュ钩琛″師鐞嗙殑璁惧锛屽鐢熺墿鐢甸樆鎶楄銆傜數妗ュ钩琛娉曠殑浼樼己鐐 鐢垫ˉ骞宠 娉曚綔涓轰竴绉嶇簿纭娴嬮噺鐢甸樆鍊肩殑鏂规硶锛屽叿鏈変互涓...
  • 鐢垫ˉ娉曟祴鐢甸樆
    绛旓細鏍规嵁杩欎簺鏂圭▼锛屾垜浠氨鍙互瀹屾暣鐨勭爺绌剁數璺簡銆傝繖浜涙柟绋嬬湅浼煎緢楹荤儲锛屼絾鏄В璧锋潵寰堢畝鍗曘傛垜浠彂鐜帮紝褰揑BC=0鐨勬椂鍊欐垜浠槸鍙互鎺ㄥ嚭BC鐢佃宸负闆剁殑銆傚苟涓擨AB=IBD,IAC=ICD,杩欏氨鏄儬鏂鐢垫ˉ鐨鍘熺悊銆傛ゼ涓荤殑鎬濊矾瑕佹敼鍙橈紝瀛︿細鐢ㄥ熀灏旈湇澶柟绋嬭В鍐冲鏉傜殑鐢佃矾銆傚儚鏄竴浜涘惊鐜殑锛屽绉扮殑閮芥槸鍙互瑙g殑銆
  • 鐢垫ˉ娉曟祴鐢甸樆瀹為獙涓,澶氬ぇ鐢垫ˉ鐏垫晱搴﹀悎閫
    绛旓細鐢垫ˉ娉曟祴鐢甸樆瀹為獙鏈閲嶈鐨勬槸濡備綍蹇熶娇鐢垫ˉ骞宠 锛屾湁鎯犳柉閫氱數妗ュ拰寮灏旀枃鍙岀數妗ャ傛儬鏂氱數妗ユ槸鎯犳柉閫氫簬1843骞存彁鍑虹殑鐢垫ˉ鐢佃矾銆傚畠鐢卞洓涓數闃诲拰妫娴佽缁勬垚锛孯N涓虹簿瀵嗙數闃伙紝RX涓哄緟娴嬬數闃伙紙鐢佃矾鍥惧鍥1锛夈傛帴閫氱數璺悗锛岃皟鑺俁1銆丷2鍜孯N 锛屼娇妫娴佽涓數娴佷负闆讹紝鐢垫ˉ杈惧埌骞宠 锛屾鏃舵湁RX=RIRN/R2銆傞氳繃浜ゆ崲娴嬮噺...
  • 鐢垫ˉ娉曟祴鐢甸樆鐨鍘熺悊鏄粈涔?
    绛旓細褰撴帴閫氱數婧愬紑鍏砈鍜屾娴佽寮鍏矴鏃讹紝妫娴佽鏈夌數娴侀氳繃锛屼絾褰撹皟鑺傚洓涓ˉ鑷傚埌閫傚綋鍊兼椂锛屾娴佽鏃犵數娴侀氳繃锛屾鏃剁О鈥滅數妗ュ钩琛♀濄備簬鏄疊銆丏涓ょ偣鐢靛娍鐩哥瓑锛屽嵆娴佽繃Ra鍜孯鐨勭數娴佺浉鍚岋紝娴佽繃Rb鍜孯x鐨勭數娴佺浉鍚屻備粠鑰屾湁浠ヤ笅鍏崇郴寮忥細涓ゅ紡鐩搁櫎寰楋紝鈥滅儹鐢甸樆娓╁害浼犳劅鍣ㄧ壒鎬у疄楠屸濅腑鐢鐢垫ˉ娉曟祴閾滅數闃伙紙Cu50锛夌殑鐢佃矾鍥...
  • 鎯犳柉椤鐢垫ˉ娴嬬數闃瀹為獙鍘熺悊
    绛旓細鎯犳柉閫鐢垫ˉ娴嬮噺鍘熺悊灞炰簬姣旇緝娉曘傚浘1鏄儬鏂鐢垫ˉ鐨鍘熺悊鍥俱傚洓涓鐢甸樆R0銆丷1銆丷2銆丷x杩炴垚鍥涜竟褰紝绉颁负鐢垫ˉ鐨勫洓涓噦銆傚洓杈瑰舰鐨勪竴涓瑙掔嚎杩炴湁妫娴佽锛岀О涓衡滄ˉ涓攱鑰佲濓紱鍥涜竟褰㈢殑鍙︿竴瀵硅绾挎帴涓婄數婧愶紝绉颁负鐢垫ˉ鐨勨滅數婧愬瑙掔嚎鈥濄侲涓虹嚎璺腑渚涚數鐢垫簮锛屽鐢熷疄楠岀敤鍙岃矾鐩存祦绋冲帇鐢垫簮锛岀數鍘嬪彲鍦0-30V涔嬮棿...
  • 鐩存祦鐢垫ˉ娴嬮噺鐢甸樆鐨宸ヤ綔鍘熺悊
    绛旓細濡傛灉璋冭妭鍏朵綑涓変釜鐢甸樆鐨鍊艰兘浣垮緱绛夊紡鎴愮珛锛岄偅涔堢敤鍏紡灏卞彲浠ュ緱鍒版湭鐭ラ噺銆備絾鏄疄闄呬笂鍙绛夊紡涓よ竟鍚勬湁涓涓彲浠ヨ皟鑺傜殑鍙彉鐢甸樆锛岄偅涔堝彟澶栦袱涓數闃绘湁涓涓槸瀹氬硷紝鍒欎綑涓嬬殑鍙﹀涓涓繀鐒跺彲浠ュ緱鍒般傜敤杩欎釜鍘熺悊鍙互鍋氭垚鐢甸樆娴嬮噺绠便傝岃繖涓師鐞嗙敤鐨勫氨鏄鐢垫ˉ鈥濈殑姒傚康锛屾垨鑰呰鈥滃钩琛$數妗モ濈殑姒傚康銆
  • 鐢垫ˉ娴嬮噺鐢甸樆鏄鏍规嵁鏄粈涔鍘熺悊
    绛旓細閫氬父鐨勬粦绾鐢垫ˉ褰撴粦绾胯緝闀挎椂浣跨敤璧锋潵灏变笉鏂逛究銆傚崱鐟烇紞绂忔柉鐗圭殑婊戠嚎鐢垫ˉ濡傚浘30锛5鎵绀猴紝鍒欓傜敤浜庢粦绾块暱鐨勬儏鍐点傚叾涓紝R1鏄湭鐭ョ數闃伙紝R2鏄凡鐭ョ數闃伙紝R3鍜孯4鐩哥瓑銆傝娴嬮噺鏌愭湭鐭ョ數闃绘椂鐢垫ˉ鐨勫钩琛$偣绂籜绔负x1锛坢锛夛紝婊戠嚎鎬婚暱搴﹀緢闀匡紝涓嶅Θ璁惧畠涓100m锛屽垯骞宠 鏃舵湁 锛1锛夛紙1锛夊紡涓紝L鍜孡鈥叉槸鎺ヨЕ鐢甸樆鐨...
  • [鎯犳柉椤跨數妗 鎯犳柉閫鐢垫ˉ鍏紡鎺ㄥ
    绛旓細>鎯犳柉椤鐢垫ˉ鐨勪娇鐢ㄦ柟娉 1.鍑嗗锛氬湪鐢垫ˉ鑳岄潰鐢垫睜鐩掑唴瑁呭叆3鑺1.5v鍙风數姹犲拰1鑺6F22鍨9V鍙犲眰鐢垫睜銆傚皢鐢垫簮杞崲寮鍏虫壋鍚戔淏鍐呪濓紝鎸囬浂浠浆鎹㈠紑鍏虫壋鍚戔淕鍐呪濓紙9V鐢垫睜鍚屾椂鎺ラ氾級锛屽鎸囬浂浠繘琛屾満姊拌皟闆讹紝浣挎寚閽堜笌琛ㄩ潰鈥0鈥濈嚎閲嶅悎銆2.娴嬮噺锛氬皢琚祴鐢甸樆鍣ㄦ帴鍒扳淩X鈥濅袱鎺ョ嚎鏌变笂锛屼及璁¤娴嬬數闃荤殑闃诲煎ぇ灏...
  • 鍙岃噦鐢垫ˉ娴嬮噺浣鐢甸樆鎬庢牱绠椾笉纭畾搴
    绛旓細1銆佹槸绛夌簿搴娴嬮噺銆2銆乽rel锛圧锛=sqrt锛坲rel(U)^2+urel锛圛锛塣2)3銆佷袱绉嶆儏鍐典笅锛岃绠楁柟娉曠浉鍚岋紝鍖哄埆鏄叿浣撶殑璁$畻鏁板煎尯鍒傛牴鎹鐢甸樆绠辩殑绾ф暟.锛堜竴鑸爣娉ㄥ湪鐢甸樆绠辩殑璇存槑涔︽垨琛ㄩ潰锛夊0.1绾,璇绘暟999惟,鍒欎笉纭畾搴=0.1%*999惟=0.999惟 琛ュ厖闂锛氶偅鏍峰氨姹傜殑鏄浉瀵硅宸簡....
  • 扩展阅读:电阻测试记录表填数据 ... 电阻计算公式一览表 ... 测量电阻的三种方法 ... 电桥测试仪使用教程 ... 测量电阻正确方法 ... 电气绝缘电阻测试记录 ... 电阻的三个公式 ... 计算电阻的5个公式 ... 桥式电阻电路计算方法 ...

    本站交流只代表网友个人观点,与本站立场无关
    欢迎反馈与建议,请联系电邮
    2024© 车视网