ÌâÄ¿ÄÚÈÝ
СµÆÅݵÆË¿µÄµç×è»áËæζȵÄÉý¸ß¶ø±ä´ó£®Ä³Í¬Ñ§ÎªÑо¿ÕâÒ»ÏÖÏó£¬Í¨¹ýʵÑéµÃµ½ÈçÏÂÊý¾Ý£¨IºÍU·Ö±ð±íʾСµÆÅÝÉϵĵçÁ÷ºÍµçѹ£©£º
£¨1£©ÔÚ·½¿òÄÚ»³öʵÑéµç·ͼ£¬¿ÉÓõÄÆ÷²ÄÓУº
µçѹ±í£¨2.5V¡¢2K¦¸£©£¬µçÁ÷±í£¨0.6A¡¢0.5¦¸£©£¬»¬¶¯±ä×èÆ÷£¨×èÖµ·¶Î§0¡«10¦¸£©£¬µçÔ´£¨3V¡¢0.1¦¸£©£¬
СµÆÅÝ¡¢µç¼ü¡¢µ¼ÏßÈô¸É£®
£¨2£©ÔÚͼÖл³öСµÆÅݵÄU-IͼÏó£®
£¨3£©ÈôÒ»µç³ØµÄµç¶¯ÊÆÊÇ1.5V£¬ÄÚ×èÊÇ2.0¦¸£®ÎÊ£º½«±¾ÌâÖеĵÆÅÝÖ±½Ó½ÓÔڸõç³ØÁ½¶Ë£¬Ð¡µÆÅݵÄʵ¼Ê¹¦ÂÊÊǶàÉÙ£¿£¨ÈôÐè×÷ͼ£¬¿ÉÖ±½Ó»ÔÚµÚ£¨2£©ÎʵÄͼÖУ©£®
I£¨A£© | 0.12 | 0.21 | 0.29 | 0.34 | 0.38 | 0.42 | 0.45 | 0.47 | 0.49 | 0.50 |
U£¨V£© | 0.20 | 0.40 | 0.60 | 0.80 | 1.00 | 1.20 | 1.40 | 1.60 | 1.80 | 2.00 |
µçѹ±í£¨2.5V¡¢2K¦¸£©£¬µçÁ÷±í£¨0.6A¡¢0.5¦¸£©£¬»¬¶¯±ä×èÆ÷£¨×èÖµ·¶Î§0¡«10¦¸£©£¬µçÔ´£¨3V¡¢0.1¦¸£©£¬
СµÆÅÝ¡¢µç¼ü¡¢µ¼ÏßÈô¸É£®
£¨2£©ÔÚͼÖл³öСµÆÅݵÄU-IͼÏó£®
£¨3£©ÈôÒ»µç³ØµÄµç¶¯ÊÆÊÇ1.5V£¬ÄÚ×èÊÇ2.0¦¸£®ÎÊ£º½«±¾ÌâÖеĵÆÅÝÖ±½Ó½ÓÔڸõç³ØÁ½¶Ë£¬Ð¡µÆÅݵÄʵ¼Ê¹¦ÂÊÊǶàÉÙ£¿£¨ÈôÐè×÷ͼ£¬¿ÉÖ±½Ó»ÔÚµÚ£¨2£©ÎʵÄͼÖУ©£®
·ÖÎö£º£¨1£©»¬¶¯±ä×èÆ÷²ÉÓ÷Öѹʽ½Ó·¨£»Ð¡µÆÅݵç×è½ÏС£¬¹Ê²ÉÓð²Åà±íÍâ½Ó·¨£»
£¨2£©ÔÚ×ø±êϵÖÐÏÈ»³ö¸÷¸öµã£¬È»ºóÓÃÒ»Ìõƽ»¬µÄÇúÏßÁ¬½Ó£»
£¨3£©ÏÈ»³öµçÔ´µÄ·¶ËµçѹÓëµçÁ÷¹ØϵͼÏߣ¬Á½ÏߵĽ»µã¶ÔÓ¦µÄµçѹºÍµçÁ÷¾ÍÊÇʵ¼ÊµçѹºÍµçÁ÷£®
£¨2£©ÔÚ×ø±êϵÖÐÏÈ»³ö¸÷¸öµã£¬È»ºóÓÃÒ»Ìõƽ»¬µÄÇúÏßÁ¬½Ó£»
£¨3£©ÏÈ»³öµçÔ´µÄ·¶ËµçѹÓëµçÁ÷¹ØϵͼÏߣ¬Á½ÏߵĽ»µã¶ÔÓ¦µÄµçѹºÍµçÁ÷¾ÍÊÇʵ¼ÊµçѹºÍµçÁ÷£®
½â´ð£º½â£º£¨1£©ÐèÒªµçÔ´¡¢µ¼Ïß¡¢µç¼ü¡¢Ð¡µÆÅÝ¡¢»¬¶¯±ä×èÆ÷¡¢µçѹ±íºÍµçÁ÷±í£»ÓÉÓÚµçѹҪ´ÓÁ㿪ʼÁ¬Ðøµ÷½Ú£¬¹Ê»¬¶¯±ä×èÆ÷²ÉÓ÷Öѹʽ½Ó·¨£»Ð¡µÆÅݵç×è½ÏС£¬¹Ê²ÉÓð²Åà±íÍâ½Ó·¨£¬µç·ͼÈçÏÂ×ó±ßͼËùʾ£º
£¨2£©¸ù¾ÝÃèµã·¨×÷ͼ£¬µÃµ½ÈçÉÏÓÒͼËùʾ£»
£¨3£©µçÔ´µÄµç¶¯ÊÆΪ1.5V£¬¶Ì·µçÁ÷Ϊ
=0.75A£¬µçÁ÷Ó뷶εçѹµÄ¹ØϵʽΪ£ºU=E-Ir=1.5-2r
ÔÚÉÏͼÖÐ×÷³öµçÁ÷Ó뷶εçѹµÄͼÏߣ¬Èçͼ£»
½»µã×ø±ê¼´ÎªÐ¡µÆÅݵÄʵ¼ÊµçѹºÍµçÁ÷£¬¹Ê¹¦ÂÊΪ£ºP=UI=0.8¡Á0.35=0.28W£®
¹Ê´ð°¸Îª£º£¨1£©Èç¼×ͼ£»£¨2£©ÈçÒÒͼ£»£¨3£©0.28£®
£¨2£©¸ù¾ÝÃèµã·¨×÷ͼ£¬µÃµ½ÈçÉÏÓÒͼËùʾ£»
£¨3£©µçÔ´µÄµç¶¯ÊÆΪ1.5V£¬¶Ì·µçÁ÷Ϊ
1.5V |
2¦¸ |
ÔÚÉÏͼÖÐ×÷³öµçÁ÷Ó뷶εçѹµÄͼÏߣ¬Èçͼ£»
½»µã×ø±ê¼´ÎªÐ¡µÆÅݵÄʵ¼ÊµçѹºÍµçÁ÷£¬¹Ê¹¦ÂÊΪ£ºP=UI=0.8¡Á0.35=0.28W£®
¹Ê´ð°¸Îª£º£¨1£©Èç¼×ͼ£»£¨2£©ÈçÒÒͼ£»£¨3£©0.28£®
µãÆÀ£º±¾Ìâ¹Ø¼üÒªÏÈ»³öСµÆÅݵķü°²ÌØÐÔÇúÏߺ͵çÔ´µÄ·¶ËµçѹÓëµçÁ÷¹ØϵͼÏߣ¬¸ù¾Ý½»µãµÃµ½µçÔ´µÄʵ¼ÊÊä³öµçѹ£¬ÔÙ¼ÆËãµç¹¦ÂÊ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿