1¡¢µç×è¼°µçÈݸ÷×èÖµ¶ÎµÄÉ豸ҪÇó£º
1.1 µç×è×èÖµ£º¸ù¾Ý¼ì²éÉ豸½øÐÐÇø·Ö£¬´ó¸Å¿ÉÒÔ·ÖΪÒÔÏÂ×è¶Î
³£¹æ×èÖµ£º10¦¸¡«1M¦¸ (³£¹æµçÇÅ¡¢ÍòÓñí¿ÉÒÔ²âÁ¿£©
Сŷµç×裺£¼10¦¸¡«¡Ý1¦¸£¨µÍ×è±í¿ÉÒÔ²âÁ¿£©
µÍ×裺£¼1¦¸¡«100m¦¸£¨ºÁÅ·±í¿ÉÒÔ²âÁ¿£¬Á¿³ÌÐèÒªµ½1m¦¸£©
³¬µÍ×裺£¼100m¦¸£¨ºÁÅ·±í¿ÉÒÔ²âÁ¿£¬Á¿³ÌÐèÒªµ½1m¦¸£¬¶øÇÒÐèÒªÅ䱸רҵÖξߣ©
¸ß×裺£¾1M¦¸¡«¡Ü20M¦¸ (³£¹æµçÇÅ¿ÉÒÔ²âÁ¿£¬ÐèÒªÅ䱸רҵÖξߣ©
³¬¸ß×裺£¾20M¦¸(¸ß×è±í¿ÉÒÔ²âÁ¿£¬ÐèÒªÅ䱸רҵÖξߣ©
1.2 µçÈÝÈÝÖµ£º¸ù¾Ý¼ì²éÉ豸½øÐÐÇø·Ö£¬´ó¸Å¿ÉÒÔ·ÖΪÒÔÏÂÈݶÎ
³£¹æÈÝÖµ£º1000PF¡«1¦ÌF (³£¹æµçÇÅ¿ÉÒÔ²âÁ¿£¬1KHZ£©
µÍÈÝ£º£¼1000PF¡«£¾10PF£¨µÍÈݱí¿ÉÒÔ²âÁ¿£¬1MHZ, ½¨ÒéʹÓð²½ÝÂ×,£©
³¬µÍÈÝ£º£¼10PF¡«0.5PF£¨µÍÈݱí¿ÉÒÔ²âÁ¿£¬1MHZ, ½¨ÒéʹÓð²½ÝÂ×£©
¸ßÈÝ£º£¾1¦ÌF¡«¡Ü10¦ÌF (¸ßÈݵçÇÅ¿ÉÒÔ²âÁ¿£¬1KHZ£¬Í¬Þ¥¸ßÈݱíÓë°²½ÝÂ׸ü¾«×¼£©
³¬¸ßÈÝ£º£¾10¦ÌF (¸ßÈݵçÇÅ¿ÉÒÔ²âÁ¿£¬120HZ£¬Í¬Þ¥¸ßÈݱíÓë°²½ÝÂ׸ü¾«×¼£©
2¡¢¼ì²â·½·¨
2.1 ÒÔÏÂ×èÖµ/ÈÝÖµ¶Î¿ÉÒÔ²ÉÓÃ4Ïß2̽ͷ²âÊÔ·¨¡£
³£¹æ×èÖµ¡¢¸ß×è¡¢³¬¸ß×è+ËùÓеçÈÝÈݶÎ
2.2 ÒÔÏÂ×èÖµ±ØÐë²ÉÑù4Ïß4̽ͷ²âÊÔ·¨
µÍ×è¡¢³¬µÍ×è¡¢ÌØµÍ×è
3¡¢µçÇżì²â½ÓÏß
1¡¢µçÇÅÖÐÓÐC1¡¢P1¡¢P2¡¢C2,Ëĸö½ÓÏßÖù,Íâ²àC1¡¢C2ΪµçÁ÷×®,P1¡¢P2Ϊµçλ׮;
2¡¢²âÁ¿Ê±,C1¡¢P1ͬʱ½Ó±»²âµç×èµÄÒ»¶ËµÄÍâ¡¢ÄÚÁ½´¦,P2¡¢C2ͬʱ½Ó±»²âµç×èµÄÁíÒ»¶ËµÄÄÚ¡¢ÍâÁ½´¦;
3¡¢ÌرðÊÇ,P1¡¢P2ÊÇ¿¿½ü±»²âµç×èµÄÁ½¶Ë,C1¡¢C2ÊÇÔ¶Àë±»²âµç×èµÄÁ½¶Ë,·ñÔò¾Í½Ó´íÁË;

4¡¢¼ì²âÉ豸µÄʶ±ð
4.1 µÍ×èÒÇ£¨0.5m¦¸¡«1K£©


4.2 ¸ß¾«¶ÈµçÈݲâÊÔÒÇ£¨0.5pF¡«10¦ÌF£©
¼ì²âµÍÈÝÖµ²úÆ·£¨0.5pF¡«1nF£©±ØÐë²ÉÓÃרÃŵÄÉ豸¼°Öξߡ£µ±ÏÂ×îºÃµÄÉ豸½¨ÒéʹÓð²½ÝÂ×£¨ÐÂÃû×Ö½ÐÊǵ£©µÄÆ·ÅÆ¡£ÀýÈçÀÏ¿îµÄ4278A¡¢4981A¾ù¿ÉÒÔ²âÊÔ£¬×îпîʽµÄÓÐ4980A¡£Í¬»ÝµÄTH2638ϵÁÐÒ²¿ÉÒÔ£»ÆäÖξß×îºÃÊÇÓÃÔ×°±êÅ䣬µ«°²½ÝÂ×µÄÖξßÌ«¹óÁË£¨¿¹¸ÉÈÅÄÜÁ¦Ç¿£©£¬Ò»¸öÒªºÃ¼¸Íò£¬¿ÉÒÔʹÓÃͬޥµÄ²úÆ·TH26009B£¬¼Û¸ñ»áʵ»ÝÒ»µã£¬Ò»¸ö´ó¸ÅÔÚ700µ½800ÈËÃñ±ÒÖ®¼ä£»


4.3 ÆÕͨµçÈݲâÊÔÒÇ£¨1000pF¡«470nF£©
¼ì²â³£¹æÈÝÖµ£¨1000pF¡«470nF£©¶ÔÉ豸¼°ÖξߵÄÐèÇó¾Í²»ÐèҪ̫¸ß£¬¿ÉÒÔʹÓÃÆÕͨͬޥµçÇŽøÐвâÁ¿£¬ÆäÖξßÒ²¿ÉÒÔ²ÉÓÃûÓп¹¸ÉÈŵįÕͨÖξߣ¬ÉõÖÁΪÁË·½±ã¼ì²â£¬¿ÉÒÔÖ±½Ó¶ÔÖξ߽øÐиÄ×°£»
