如图变压器是理想变压器，求电流i 一个理想变压器的线圈绕向如图甲所示.右线圈输入电流i i –...
\u5982\u56fe\u6240\u793a\uff0c\u7406\u60f3\u53d8\u538b\u5668\u8f93\u5165\u7684\u4ea4\u53d8\u7535\u538b\u4e3aU1\uff0c\u539f\u7ebf\u5708\u4e2d\u7684\u7535\u6d41\u4e3aI1\uff0e\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f\uff08\u3000\u3000\uff09A\uff0e\u4fdd\u6301U1\u53caRA\u3001\u5c06K\u7531a\u6539\u63a5\u5230b\u65f6\uff0c\u539f\u7ebf\u5708\u531d\u6570\u53d8\u5c0f\uff0c\u6240\u4ee5\u526f\u7ebf\u5708\u7535\u538b\u53d8\u5927\uff0c\u7535\u963b\u4e0d\u53d8\uff0c\u6240\u4ee5R\u4e0a\u7535\u6d41\u589e\u5927\uff0c\u7535\u6d41\u4e0e\u531d\u6570\u6210\u53cd\u6bd4\uff0c\u5219I1\u5c06\u589e\u5927\uff0c\u6545A\u9519\u8bef\uff1bB\u3001\u5c06K\u7531b\u6539\u63a5\u5230a\u65f6\uff0c\u539f\u7ebf\u5708\u531d\u6570\u53d8\u5927\uff0c\u6240\u4ee5\u526f\u7ebf\u5708\u7535\u538b\u53d8\u5c0f\uff0c\u7535\u963b\u4e0d\u53d8\uff0c\u6240\u4ee5R\u4e0a\u7535\u6d41\u51cf\u5c0f\uff0c\u6240\u4ee5R\u7684\u529f\u7387\u5c06\u589e\u5927\uff0e\u6545B\u9519\u8bef\uff1bC\u3001\u4fdd\u6301U1\u53caK\u4e0d\u53d8\uff0c\u5c06R\u589e\u5927\u65f6\uff0c\u7535\u538b\u4e0d\u53d8\uff0c\u6240\u4ee5\u8f93\u51fa\u529f\u7387\u53d8\u5c0f\uff0c\u6545\u539f\u7ebf\u5708\u7684\u8f93\u5165\u529f\u7387\u53d8\u5c0f\uff0c\u5219I1\u53d8\u5c0f\uff0c\u6545C\u9519\u8bef\uff1bD\u3001K\u4e0d\u53d8\uff0cU1\u589e\u5927\uff0c\u526f\u7ebf\u5708\u7535\u538b\u53d8\u5927\uff0c\u7535\u963b\u4e0d\u53d8\uff0c\u6240\u4ee5\u8f93\u51fa\u529f\u7387\u53d8\u5927\uff0c\u6545\u539f\u7ebf\u5708\u7684\u8f93\u5165\u529f\u7387\u53d8\u5927\uff0c\u5219I1\u589e\u5927\uff0c\u6545D\u6b63\u786e\uff1b\u6545\u9009\uff1aD\uff0e
i\u7684\u66f2\u7ebf\u662f\u4e09\u89d2\u6ce2\u66f2\u7ebf\uff0c\u6bcf\u4e00\u6bb5\u90fd\u662f\u76f4\u7ebf\u3002\u5c31\u662fi\u968f\u65f6\u95f4\u53d8\u5316\u662f\u7ebf\u6027\u53d8\u5316\u7684\u3002
\u5728\u7b2c\u4e00\u79d2\u5185\u662f\u76f4\u7ebf\u65b9\u7a0bi=kt\u3002
\u0394i/\u0394t=k\u662f\u5b9a\u503c\uff0c\u6240\u4ee5B\u221dI,\u0394B/\u0394t=\u5b9a\u503c\uff0cS\u662f\u5b9a\u503c\uff0c\u0394\u03c6/\u0394t\u4e5f\u662f\u5b9a\u503c\uff0c\u6240\u4ee5\u526f\u7ebf\u5708\u7684\u611f\u751f\u7535\u6d41\u662f\u5b9a\u503c\u3002\u6240\u4ee5C\u6b63\u786e\u3002
\u540c\u6837\u7684\uff0c\u53ef\u4ee5\u770b\u51fa\u7b2c\u4e8c\u79d2\u5185\uff0c\u611f\u751f\u7535\u6d41\u5927\u5c0f\u4e0d\u53d8\uff0c\u8ddf\u7b2c\u4e00\u79d2\u65b9\u5411\u76f8\u53cd\u4e86\u3002
\u7b2c\u4e09\u79d2\u5185\u53c8\u8ddf\u7b2c\u4e00\u79d2\u76f8\u540c\uff0c\u8fd9\u6837\u5468\u671f\u662f2\u79d2\uff0c\u6240\u4ee5B\u9519\u8bef\u3002A\u4e5f\u9519\u8bef
D\u7684\u65b9\u5411\u53ef\u4ee5\u6839\u636e\u695e\u6b21\u5b9a\u5f8b\u770b\u51fa\uff0c\u7b2c\u4e8c\u79d2\uff0c\u78c1\u901a\u662f\u53d8\u5c0f\u7684\uff0c\u5728\u526f\u7ebf\u5708\u8fd9\u91cc\u78c1\u573a\u5411\u4e0a\uff0c\u6240\u4ee5\u4ea7\u751f\u7684\u611f\u751f\u7535\u6d41\u78c1\u573a\u4e5f\u5411\u4e0a\uff0c\u706f\u6ce1\u7535\u6d41\u7531\u4e0a\u5230\u4e0b\u3002
次边的6ohm电阻折射到原边，相当于24ohm，所以原边电流=18/(12+24)=0.5A
据此，次边电流=2X0.5A=1A
电流方向：从原边同名端进去，从次边同名端出来，为+
电流是0，直流电源无法通过变压器变压。
请参考
绛旓細鍥犱负鏄悊鎯冲彉鍘嬪櫒锛屾墍浠ュ嵆渚挎槸鐩存祦鐢垫簮涔熶細鎸佷箙鎰熺敓鐢靛姩鍔裤傛杈圭殑6ohm鐢甸樆鎶樺皠鍒板師杈癸紝鐩稿綋浜24ohm锛屾墍浠ュ師杈鐢垫祦=18/(12+24)=0.5A 鎹锛屾杈圭數娴=2X0.5A=1A 鐢垫祦鏂瑰悜锛氫粠鍘熻竟鍚屽悕绔繘鍘伙紝浠庢杈瑰悓鍚嶇鍑烘潵锛屼负+
绛旓細绋冲畾鏃锛岀數娴i=0銆傚洜涓18V鐨勭數婧愭槸鐩存祦鐢锛屽彉鍘嬪櫒鏄涓嶈兘瀵圭洿娴佺數杩涜鍙樺帇鐨勶紝涔熷氨鏄锛岀ǔ瀹氬悗18V涓渚х粫缁勬湁1.5A鐨勭洿娴佺數娴侀氳繃锛岃6娆т竴渚х粫缁勬病鏈夌數娴佹祦杩囥傚鏋滄槸姹寮濮嬫帴閫18V鐢垫簮鍚庯紝6娆т竴渚х粫缁勭殑鐬棿鐢垫祦锛閭ｅ彲浠ヨ繖鏍璁＄畻锛18V鐢垫簮鎺ヤ笂鐬棿锛6娆т晶缁曠粍鐬棿鎰熷簲鐢靛帇涓9V锛堝洜涓哄彉姣斾负2锛1锛夛紝...
绛旓細鍙樺帇鍣鍓竟鐢靛帇绛変簬4梅2=2V銆傚壇杈鐢垫祦绛変簬2梅1=2A=2鈭0º
绛旓細濡傛灉鏄崟鐩哥殑锛氳緭鍏鐢垫祦=S/U1=215000/660锛岃緭鍑虹數娴=S/U2=215000/36 濡傛灉鏄笁鐩哥殑锛氳緭鍏ョ數娴=S/(U1*鏍瑰彿3锛=S/(660*1.73)杈撳嚭鐢垫祦=S/(U2*鏍瑰彿3锛=S/(36*1.73)鍙樺帇鍣 鍙樺帇鍣紙Transformer锛夋槸鍒╃敤鐢电鎰熷簲鐨勫師鐞嗘潵鏀瑰彉浜ゆ祦鐢靛帇鐨勮缃紝涓昏鏋勪欢鏄垵绾х嚎鍦堛佹绾х嚎鍦堝拰閾佽姱锛堢鑺級銆備富瑕佸姛鑳芥湁...
绛旓細棣栧厛宸﹁竟鍥炶矾鏍规嵁KVL鏈:U=I1*R1+U1+I2*R2 (1)鍙宠竟鍥炶矾鏈:U2=-I3*(1/wc)+I2*R2 (2)I1=I2-I3 (3)U1/U2=1/2 (4)I1/I3= 2 (5)鍗冲彲姹傚嚭
绛旓細m sin 锛岃В寰鐢垫祦鐨勬渶澶у糏 m =0.03 A锛屾墍浠ュ師绾垮湀鐨勭數娴佺殑鏈夋晥鍊间负0.03A锛屾牴鎹數娴佷笌鍖濇暟鎴愬弽姣斿彲寰梟 1 :n 2 =I 1 :I 2 =0.1:0.03=10:3锛屾墍浠姝ｇ‘锛庢晠閫堿锛庣偣璇勶細瑙ｅ喅鏈鐨勫叧閿氨鏄湁鐢垫祦鐨勭灛鏃跺艰〃杈惧紡姹傚緱鍘熺嚎鍦堜腑鐢垫祦鐨勬渶澶у硷紝杩涜屾眰寰楀師绾垮湀鐨勭數娴佺殑鏈夋晥鍊肩殑澶у皬锛
绛旓細鏍规嵁鐢靛帇涓庡対鏁版垚姝ｆ瘮锛屽壇绾垮湀鐨勭數鍘嬪嘲鍊间负120600脳1802=362V锛屾晠A閿欒锛 B銆佹牴鎹緭鍏ュ姛鐜囩瓑浜庤緭鍑哄姛鐜囩煡P=UI=180脳0.5=90W锛2脳40W锛屾晠B姝ｇ‘锛 C銆佸綋鍓嚎鍦堢數闃讳负14娆у鏃讹紝鍓嚎鍦鐢垫祦涓3614=2.6A锛屾鏃跺師绾垮湀鐢垫祦涓120600脳2.6锛0.5A锛屾晠C閿欒锛 D銆佸師绾垮湀鐨勭數娴佹渶澶т负0.5A锛...
绛旓細鐞嗘兂鍙樺帇鍣鐨勭數鍘嬩箣姣斾笌绾垮湀鍖濇暟鎴愭姣锛岀數娴涔嬫瘮涓庣嚎鍦堝対鏁版垚鍙嶆瘮锛岄樆鎶椾箣姣斾笌鍏剁嚎鍦堝対鏁扮殑骞虫柟鎴愭姣斻傜悊鎯冲彉鍘嬪櫒鐨勪袱涓熀鏈ц川锛1銆佺悊鎯冲彉鍘嬪櫒鏃笉娑堣楄兘閲忥紝涔熶笉鍌ㄥ瓨鑳介噺锛屽湪浠讳竴鏃跺埢杩涘叆鐞嗘兂鍙樺帇鍣ㄧ殑鍔熺巼绛変簬闆讹紝鍗充粠鍒濈骇杩涘叆鐞嗘兂鍙樺帇鍣ㄧ殑鍔熺巼锛屽叏閮ㄤ紶杈撳埌娆＄骇鐨勮礋杞戒腑锛屽畠鏈韩鏃笉娑堣楋紝涔熶笉鍌ㄥ瓨鑳介噺銆
绛旓細鍋氶鎬濊矾鏄敤R1鐨鐢垫祦鍜岀數闃诲兼眰鍑鍙樺帇鍣鍓竟鐢靛帇20V锛屼箻浠ュ彉姣10杈撳叆鐢靛帇200V銆俁1鍔熺巼=20脳1=20W銆俁2鍔熺巼=U2²梅R2=20²梅40=10W銆傝緭鍑哄姛鐜囩瓑浜庤緭鍏ュ姛鐜囦负35W锛屼竴娆3鍔熺巼=35-20-10=5W銆傜數瀹圭數娴佺瓑浜庣數闃籖3鐨勭數娴=鈭氾紙P梅R3锛夆垰(5梅20)=0.5A銆備互涓婂簲璇ユ病闂鍚э紝娉ㄦ剰R3鍜岀數瀹笴鏄...
绛旓細鍦╰= T 4 鏃讹紝鏍规嵁鍘熺嚎鍦堣緭鍏ョ殑浜ゆ祦鐢电殑鐬椂鍊艰〃杈惧紡i=I m sin蠅t鍙緱锛0.03A=I m sin蠅 T 4 =I m sin 2蟺 T ? T 4 =I m sin 蟺 2 锛岃В寰鐢垫祦鐨勬渶澶у糏 m =0.03A锛屾墍浠ュ師绾垮湀鐨勭數娴佺殑鏈夋晥鍊间负 0.03 2 A锛屾牴鎹數娴...
