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Old 15th August 2009, 08:28 AM   #1
Default need help...confusion in some questions

helllo...
hope you fine...
can you reply me for that questions with good reasons?
q#1 why do we need input impedence of a transistor high for amplifiers?
q#2 why do we need input impedence of a transistor some times low in various applications?
q#3 how doping level effects our devices such as transistors?why we use different doping levels such as high,,low,,medium in transistors??

i will be very happy if you answer my questions...
thanks...
samisyed is offline  
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