Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"自39班  高新成   7號" 
"       這是一個 “低電壓工作的功率放大器”的設計。  " 
"             全電路的構成" 
"          電源電壓以3v為基準，最低工作電壓在1.5v以下。" 
"          Tr1,Tr2是為了獲得偏置電壓，而把晶體管連接成為二極管使用的。這樣所形成的電壓與輸出直流電位相等。" 
"          Tr3,Tr4為輸入級的差分放大器電路，由 NPN晶體管組成。Tr5,Tr6為第二級差分放大電路，采用PNP管構成。" 
"      采用PNP管的原因在于，當電源電壓變化時，應使工作電壓保持不變。如果第二級也采用NPN管，則必須將與" 
"      R7 相當的部分更換成為恒流電路。" 
"          關于Tr7~Tr10，當無信號時，Tr7 和Tr9 ，Tr8 和Tr10 為配對電流密勒；當有信號時，相對于Tr7,Tr8的電流，" 
"      Tr9 ，Tr190 的電流將呈現指數形式變化規律，所以電路由A 類變為B 類。" 
"      Tr11，Tr12 為電流密勒，是為了獲得上端振幅。" 
"" 
"" 

EncryptionType: 2
UsingVectorGraphics: 0
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