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1. ¸ñÇ¥¼³Á¤
- 1Â÷ RCȸ·Î¸¦ »ç¿ëÇؼ­ cutoff frequency°¡ 100HzÀÎ low pass filter¸¦ ¼³°èÇÏ°í ½Ã¹Ä·¹ÀÌ¼Ç ¹× ½ÇÇèÀ» ÅëÇؼ­ °ËÁõÇ϶ó.

2. ºÐ¼® ¹× ÇÕ¼º
(1) low pass filter
low pass filter´Â ÀÛÀº ÁÖÆļö¸¦ °®´Â ½ÅÈ£¸¸À» Ãâ·ÂÀ¸·Î Åë°ú ½ÃÄÑ ÁÖ´Âfilter.

(2) R°ª, C°ª °áÁ¤


Vout¸¦ V1¿¡ ´ëÇÑ ½ÄÀ¸·Î ¼¼¿öº¸¸é Vout = V1ÀÌ µÇ°í Á¤¸®Çϸé Vout=Vi°¡ µÈ´Ù. ¿©±â¼­ Vout/Vi = H(jw)´Â network functionÀ̸ç network functionÀ» wÀÇ ÇÔ¼ö·Î º¸¸é frequency response°¡ µÈ´Ù.
|Vout|=|H(jw)|*|V1|¿¡¼­ Ãâ·ÂÀÇ Å©±â´Â ÀÔ·ÂÀÇ Å©±â¿Í |H(jw)|ÀÇ °öÀ¸·Î °áÁ¤ µÇ¹Ç·Î |H(jw)|ÀÇ °ªÀÌ w¿¡ µû¶ó¼­ º¯ÇϹǷΠÃâ·ÂÀÇ Å©±âµµ w¿¡ µû¶ó¼­ º¯ÇÑ´Ù. µû¶ó¼­ |H(jw)|ÀÇ °ªÀºÀÌ µÇ¾î |H(jw)|ÀÇ °ªÀ» ºñ±³Çؼ­ Ãâ·ÂÀÇ Å©±â¸¦ ºñ±³ÇØ º»´Ù.
|H(jw)|½ÄÀ» º¸¸é wÀÇ °ª¿¡µû¶ó º¯È­Çϴµ¥ w°¡ 0À̸é 1ÀÌ µÇ¾î ÃÖ´ë°ªÀÌ µÇ°í w°ªÀÌ Ä¿Áú¼ö·Ï |H(jw)|Àº °¨¼ÒÇÏ´Â °ÍÀ¸·Î º¼ ¼ö ÀÖ´Ù. ±×¸®°í cutoff ÁÖÆļö°¡ 100HzÀ̹ǷΠ100Hz¿¡¼­ |Ãâ·ÂÀÇ Å©±â´Â |H(jw)|ÀÇ ÃÖ´ë°ª¿¡1/¹è°¡ µÇ¾î¼­ =1/°¡ µÈ´Ù µû¶ó¼­ R°ú CÀÇ °ªÀ» ±¸ÇÒ ¼ö ÀÖ´Ù.
cutoffÀÏ ¶§ ÁÖÆļö¸¦|H(jw)|½Ä¿¡ ´ëÀÔÇÏ¿© R°ú CÀÇ °ªÀ» ±¸Çغ¸¸é w=2¥ðf=200¥ð°¡ µÇ°í = 1/ À̹ǷΠRC=1/w = 1/200¥ð = 0.0016ÀÌ µÈ´Ù . µû¶ó¼­ R°ú CÀÇ °öÀº 0.0016ÀΠȸ·Î¸¦ ¼³°è ÇÏ¸é µÈ´Ù.

3. Á¦ÀÛ ¹× ½ÃÇè
0.1uFÀÇ Ä³ÆÛ½ÃÅ͸¦ »ç¿ëÇϱâ·Î °áÁ¤Çß°í °è»ê°á°ú ÀúÇ×Àº 16k°¡ µÇ¾ú´Ù.


½Ã¹Ä·¹ÀÌ¼Ç °á°ú¸¦ º¸¸é 100HzÀÏ ¶§ 0.707V°¡ µÊÀ» º¼ ¼ö ÀÖ´Ù.
(1) À§ÀÇ ½Ã¹Ä·¹ÀÌ¼Ç °á°ú¸¦ Åä´ë·Î ±×¸²1°ú °°Àº ȸ·Î¸¦ Á÷Á¢ ±¸¼ºÇÑ´Ù.


(2) 1V»çÀÎÆÄ

 
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