2024年04月25日

正弦振荡电路

2003 年 11 月 19 日
 

???????????· ????×??¤??????????????????????×÷???????????????????·???÷???????ó??????×??·?????????????¨???????¨???§????????·ù???¨?????????????????????????????·???????????? ?¨1??LC???????·???ü???????????§??????°??×????????·??§?¨???????????????? ?¨2??RC???????·?????????ù???????ù??·??§?¨????????1???? ?¨3???§?????????·???????ú?ú???????¨???????????????·??????????3?§???±???????????????·?ú???????????????????×???±????·????§?????????·????×?????????????·??????????à???§???????÷?????????·?????ú?ú??ZWB-1??ZWB-2?????? ?à??????·ù?????????? ·??????????????·?÷???????ù±?·??ó?÷??·???????×é????????91?ù?????ò???????????·????????????±??·????·??????·????±??·???????? Kf=Uf/Ui=KF= ???????·?ú?ú???????ò±???·???????Uf??????????Ui???à???ù??±????????????? ??k+??f=2n??————————————???? ?¨n=0,1,2,…….. ?????????ó|Uf|??|Ui|,?ù????·ù???????????? KF??1——————————————-???? ?????ú×????????????????????ò???·?ú?ú???????????????÷???§?????¤×÷??·????????ò???ù??°ü????·
á???????¨??·??????????????????????ú×??????????????????????????ú?ú?????????????????????? ??1 ??2 ????±????÷·????????????· ??2?¨a)??±????÷·??????????·??????·?????????????????Ui?????????????????????????????·??????????×è??????×è?????ù??????????Uo??Ui·??
à????Uo?????????????????????????¨??Uf????????????Uf??????Ui???à???????§????????×????ó??±????÷??????±??????????·???¨?????????????????¤?÷???·????????????????????·?±????? ????rbeRC/M————————??3 f??1/2??———————-??4 ??????rbe???ù???????????????????÷???§??×è??R?????????????????????§??×è??M???????????? ?????????????????· 1???????????·?à??????????±?·¨ ??3?¨a???????????????÷?????÷???§???·?????à????????????????????·????§????·??????à????????Xbe??Xce???????à??????????·????????????í????????????Xcb???????????°?????à·??? ???????à???????ì?é?????á???????·?????èXbe??Xce????????Xcb?????????ò?????±???·???????????????????·????×è?????ù??Uo??Ui·??à
?°Ic??IL·??à?????òXbe??Xce??????????IC±?UO???°90?????òXcb?????????ù??Uf±?IL???ó90???????à????????3?¨b????????????????Uf??Ui???à???????á???????¤?÷?? ??3 ??4 2?????????????????·?¨??±?×????·?? ??4?¨a)?????????????·?°?????÷???§???·??????4?¨b??????????·??????à???????????????????ù??????????????·????????????????????·?????????????ó?????????????????·???????????????????????? ????C
2/C1———————————-??5 f??-?¨1??/ ——————-??6 ??°?·???????F=C1/C2??0.5-0.01???????????????·???????????????????????????????????????????ù?????????????????????¨·??????÷?????????????????????¨?????????????·???±?????????÷??????????±??????±???á??·?????????±????ù???¨???????????????????????????·??


站内搜索