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[???ù±???????2004-04-19 1:10 PM????±à??]

??4    RCD?ü?????·  

3.2    ??????±??¤     ??????±??¤????PI?·?????÷±??¤???ü??±??¤?±????°???????????°??????????????????????ü????????±??¤?????????ù???÷·???±??¤??????±??¤?????¨???????????????????????????????÷???????§??±??¤???ò???????????¤?±???????·?ò???÷????????????PI?·?????÷±??¤????????±?????????3?é???ò???????÷±??¤???·???ü????·??????÷???????????÷????×÷?????????????¨????????D1??R1??C1×é????·???±??????·??????·?×é????PI?·???????????ó??????????±????÷?????????÷???????¨?????±?ò?????ó?????????á????PWM??????????±????????????????÷±????????¨????????D2???????±???????÷???????÷???±??????·????·??????±???????????×÷???? 3.3    ????±??¤     ????±??¤???????·????×?????±?????±??¤?¨×?????±???????±??¤?±????????????????????1?ù?????±???·?????????????÷±??¤???????±?????¤?á??×°??????????°??????÷±??¤??×????è???á????×°??????±????ò?????????¤?±??(????????)?????·?ò???÷???è????±?????????±??¤??±?×°????????????×?????±????????±?????????????±??×?????±??????????????????????¨×?????????×?????±????????í?????????ò??×°?????ó?????·????????±??¤???±???·???÷±??¤?±?????·??×?????±??????????????????·?????????¤×÷??5V?????·????×?????±??????????????ü±??í?????????·???????????¨????????????????????±??¤???í??????5V????????±???????????×?????±??????á?°?ì???????÷?????? 4    RCD/RC?????ü??     ·??¤±????÷????±????÷?????????????±???????????±??????????D??S?????á?ú?ú±?????????????·?????????????·????ó???????????????????????±???á?ú?ú???????????ò????±????????ü?????·??????????RCD?ü?????·?????ò?à???×????????????????????±???????????RCD?ü??·??¤±????÷????4?ù????????6??????????????RCD?ü?????·???ó????????D??S????????????·??ó?ó???????????????????±???ú?ú???????ü?????????????????????ò??±????÷??±????????????????á????????????????????????????????????±???????????????±?R??C??D???????????????????°?ì?????ó???ò?????è?????????ü???·????????????????D??S????????RC?ü?????·?????é????????±????í?????§??????5????RCD/RC?????ü?????·????7?ù??????RCD?ü??·??¤±????÷??RCD/RC?????ü??·??¤±????÷??????Vds?????é?¨????  

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(a)    RCD snubber    (b)RCD/RC snubber

??7    ??RCD?ü?????·?°RCD/RC?????ü?????·?óvds?????é?¨??

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