作者msu (do my best)
看板Grad-ProbAsk
标题[理工] [电子]-ECL逻辑闸
时间Tue Dec 8 20:21:05 2009
有一电路:
http://www.wretch.cc/album/show.php?i=msuPTT&b=1&f=1364052334&p=1
For the circuit, let the voltage at input A,B,C,D are 0V and 5V.
Assume |VBE|=0.7V and β=50
(a)For all inputs low at 0V,what is the voltage at Y?
(b)If A and C are raised to 5v,what is the voltage at Y?
(c)Express Y as a logic function of A,B,C and D.
请问高手如何解这一题呢?^^
感谢
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