电阻电流电压不同情况下的不同计算公式
\u7535\u6d41\u7535\u538b\u7535\u963b\u516c\u5f0fR=U/I \u6b27\u59c6\u5b9a\u5f8b
1\u3001\u4e32\u8054\u7535\u8def\u2460\u7535\u6d41\uff1ai=i1=i2\u2461\u7535\u538b\uff1aU=U1+U2 \u2462\u7535\u963b\uff1aR=R1+R2
2\u3001\u5e76\u8054\u7535\u8def\u2460\u7535\u6d41\uff1ai=i1+i2\u2461\u7535\u538b\uff1aU=U1=U2 \u2462\u7535\u963b\uff1a \u603b\u7535\u963b\u7684\u5012\u6570\u7b49\u4e8e\u5404\u5e76\u8054\u7535\u963b\u7684\u5012\u6570\u548c\uff0c\u5982\u679cn\u4e2a\u963b\u503c\u76f8\u540c\u7684\u7535\u963b\u5e76\u8054\uff0c\u5219\u6709R\u603b= R/n
\u6b27\u59c6\u5b9a\u5f8b\u5c31\u662fI\uff08\u7535\u6d41\uff09=U(\u7535\u538b)/R\uff08\u7535\u963b\uff09
\u5728\u7535\u963b\u4e00\u5b9a\u65f6,\u7535\u538b\u548c\u7535\u6d41\u6210\u6b63\u6bd4\uff1bR=U/I
\u5728\u7535\u538b\u4e00\u5b9a\u65f6,\u7535\u963b\u548c\u7535\u6d41\u6210\u53cd\u6bd4\uff1bU=I*R
\u5728\u7535\u6d41\u4e00\u5b9a\u65f6,\u7535\u538b\u548c\u7535\u963b\u6210\u6b63\u6bd4.I=U/R
并联分流，并联各组件电压相等
假设R1，R2串联 总阻值为两者之和
假如并联 总阻值为R1R2/R1+R2
绛旓細涓茶仈鍒嗗帇锛屼覆鑱斿悇缁勪欢鐢垫祦鐩哥瓑 骞惰仈鍒嗘祦锛屽苟鑱斿悇缁勪欢鐢靛帇鐩哥瓑 鍋囪R1锛孯2涓茶仈 鎬婚樆鍊间负涓よ呬箣鍜 鍋囧骞惰仈 鎬婚樆鍊间负R1R2/R1+R2
绛旓細鏍规嵁鍏鐢垫祦瀹氬緥鎴栬呮槸鍩哄皵闇嶅か瀹氬緥銆傛垜浠彲浠ョ煡閬擄細涓茶仈鐢佃矾鐢垫祦澶勫鐩哥瓑锛堝湪涓鏉℃敮璺笂锛夛紝鐢靛帇鍙敤鍒嗗帇鍏紡锛涘苟鑱旂數璺數鍘嬮檷閮界浉鍚岋紙鍦ㄥ悓涓や釜鑺傜偣涔嬮棿锛夛紝鐢垫祦鍙敤鍒嗘祦鍏紡銆傝嚦浜鐢甸樆鐨璁＄畻锛屼綘鍙互鐢ㄤ覆骞惰仈鐨勭煡璇嗕緷娆＄瓑鏁堝寲绠锛屼篃鍙互鍒╃敤鎴寸淮鍗楀畾鐞嗭紝姹傚嚭寮璺數鍘嬪拰鐭矾鐢垫祦銆傚紑璺數鍘嬫瘮涓婄煭璺數娴佷究鏄瓑鏁...
绛旓細R鎬=R1+R2+R3 骞惰仈锛欼鎬=I1+I2+I3 U鎬=U1=U2=U3 1/R鎬=1/R1+1/R2+1/R3 鏄熷舰鑱旀帴鍜屼笁瑙掑舰鑱旀帴绛夋晥鍙樻崲锛氫笁瑙掑舰鈫掓槦褰細R鏄熷舰=鐩搁偦涓ょ偣缁勭殑涔樼Н/涓夎褰笁鐢甸樆涔嬪拰 鏄熷舰鈫掍笁瑙掑舰锛歊ab=Ra+Rb+RaRb/Rc Rbc=Rb+Rc+RbRc/Rc Rca=Rc+Ra+RcRa/Rb 鏂规硶寰堝锛屼竾鍙樹笉绂诲叾涓
绛旓細1銆佷覆鑱旂數璺憼鐢垫祦锛歩=i1=i2鈶鐢靛帇锛歎=U1+U2 鈶㈢數闃伙細R=R1+R2 2銆佸苟鑱旂數璺憼鐢垫祦锛歩=i1+i2鈶＄數鍘嬶細U=U1=U2 鈶㈢數闃伙細 鎬鐢甸樆鐨鍊掓暟绛変簬鍚勫苟鑱旂數闃荤殑鍊掓暟鍜岋紝濡傛灉n涓樆鍊肩浉鍚岀殑鐢甸樆骞惰仈锛屽垯鏈塕鎬= R/n 娆у瀹氬緥灏辨槸I锛堢數娴侊級=U(鐢靛帇)/R锛堢數闃伙級鍦ㄧ數闃讳竴瀹氭椂,鐢靛帇鍜岀數娴佹垚姝ｆ瘮锛汻=U...
绛旓細鐢甸樆鎬庝箞璁＄畻濡備笅锛氱數闃讳笌鐢靛帇锛圴oltage锛夊拰鐢垫祦锛圕urrent锛変箣闂寸殑鍏崇郴鍙互鐢ㄤ互涓嬫濮嗗畾寰嬬殑鍏紡鏉ヨ〃绀猴細R=V/I锛孯浠ｈ〃鐢甸樆锛堝崟浣嶄负娆у锛岀鍙蜂负惟锛夛紱V浠ｈ〃鐢靛帇锛堝崟浣嶄负浼忕壒锛岀鍙蜂负V锛夛紱I浠ｈ〃鐢垫祦锛堝崟浣嶄负瀹夊煿锛岀鍙蜂负A锛夈傚凡鐭ョ數鍘嬪拰鐢垫祦锛氬鏋滀綘宸茬煡鐢佃矾涓殑鐢靛帇鍜岀數娴佸硷紝鍙互鐩存帴浣跨敤娆у瀹氬緥鏉ヨ绠...
绛旓細1銆鐢甸樆鍙樺ぇ鏃讹紝鍦鐢靛帇涓鍙樼殑鎯呭喌涓锛屾牴鎹濮嗗畾寰嬶紝鐢垫祦鍙樺ぇ 2銆佺數闃诲彉澶ф椂锛屽湪鐢垫祦涓嶅彉鐨勬儏鍐典笅锛屾牴鎹濮嗗畾寰嬶紝鐢靛帇鍙樺ぇ 3銆佺數闃诲彉澶ф椂锛屽湪鐢靛帇涓嶅彉鐨勬儏鍐典笅锛屾牴鎹濮嗗畾寰嬶紝鐢垫祦鍙樺皬 4銆佺數闃诲彉澶ф椂锛屽湪鐢靛帇涓嶅彉鐨勬儏鍐典笅锛屾牴鎹濮嗗畾寰嬶紝鐢垫祦鍙樺ぇ 瀵间綋瀵鐢垫祦鐨闃荤浣滅敤灏卞彨璇ュ浣撶殑鐢甸樆銆傜數闃...
绛旓細鎬绘槸鍋囪鐢甸樆鏄笉鍙樼殑銆傚叾瀹炵幇瀹炰腑鐨勬潗鏂欙紝鐢甸樆鍦ㄥ鐣屾潯浠讹紙渚嬪娓╁害锛夊彉鍖栦笅绋冲畾涓嶅彉鐨勶紝鍙槸涓灏忕被鑰屽凡銆備簨瀹炰笂锛屾湁鏃跺伐绋嬪笀浼氳姳寰堝ぇ绮惧姏浣垮緱鏌愮鍏冧欢鐨勭數闃绘寜鐓т汉浠笇鏈涚殑鏂瑰紡鍙樺寲銆備緥濡備簩鏋佺锛屽氨鏄竴涓姞鍘嬫柟鍚戠殑鐢甸樆杩滆繙澶т簬鍙︿竴涓姞鍘嬫柟鍚戠殑鐢甸樆鐨鐢靛瓙鍏冧欢銆傝繖鏃跺欑數闃绘樉鐒舵槸涓鐢靛帇鍜鐢垫祦鏈夊叧鐨勩
绛旓細鍚屼竴鐢靛櫒鍦涓嶅悓鐢佃矾涓叾鍚勯」鍙傛暟鍙樺寲濡備笅锛鐢甸樆涓嶅彉锛岀數鍘嬨鐢垫祦銆佸姛鐜囧潎鍙樸傚洜涓篜=UI U=IR 鏍规嵁鍏紡锛涘湪涓嶅悓鐨勭數璺腑鐢靛帇鍙兘涓嶅悓锛岀數鍘嬪彉鍖栭偅鐢垫祦銆佸姛鐜囧氨鍙樺寲銆傚悓鐞嗭紱涓嶅悓鐢靛櫒鍦ㄥ悓涓鐢佃矾涓槸鐢靛帇涓鍙橈紝鐢甸樆銆佺數娴併佸姛鐜囧彉鍖栥
绛旓細鍗充究鏄湡姝ｇ殑閲戝睘鎺ヨЕ鐨勭數婧愬紑鍏筹紝涔熸槸鏈夋帴瑙鐢甸樆/瀵奸氬帇闄嶏紙铏界劧涓嶅悓鐢垫祦涓鍘嬮檷涓嶅悓锛夌殑锛涗粎浠呭氨瀵奸氳岃█锛屽浜庝笉鍚岀郴鍒楃殑闆嗘垚鐢佃矾鏉ヨ锛屽洜涓哄簲鐢ㄥ璞′笉鍚岋紝瀵奸氬悗鐨勮緭鍑鐢靛帇鏈変笉鍚岀殑瑙勫畾锛屽吀鍨嬫槸TTL鐢靛钩鍜孋MOS鐢靛钩鐨勪笉鍚銆傝繖鏂归潰瓒呰繃浜嗘湰闂鐨勫唴瀹癸紝灏嗘棩蹇楅噷鍙﹀澶勭悊銆
绛旓細鐢垫祦鐨璁＄畻闇瑕佸叿浣撻棶棰樺叿浣撳垎鏋愶紝涓嶅悓鎯呭喌涓璁＄畻鏂瑰紡涔熶笉鍚 1銆佷竴鑸儏鍐典笅璁＄畻鐢垫祦鐢ㄦ濮哾ao瀹氬緥锛屾濮嗗畾寰嬪畾涔夊紡锛氱數娴侊紳鐢靛帇梅鐢甸樆銆傚師鐞嗗紡锛氱數娴侊紳鍗曚綅鏃堕棿閫氳繃鐨勭數閲忥紳Q锛弔銆2銆佷覆鑱旂數璺亣璁緉涓敤鐢靛櫒涓茶仈锛氱數娴侊細I鎬=I1=I2...=In 锛堜覆鑱旂數璺腑锛岀數璺悇閮ㄥ垎鐨勭數娴佺浉绛夛級锛3銆佸苟鑱旂數璺亣璁緉涓...
