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Example 15.2 When the transistor is on, VBE-0.7V and B-50. Analyze the operation region of the transistor and calculate the output voltage when VBB is OV, 1V, and 3V, respectively. Vec 12V R2k Ry 5kQ BB L15 Large Signal

Answer 1

Ans Given Valuus B- 50 Vcc-lV ak RE 5K KVL op VeB=Is (s)+o +0.7 the in Active Ragrior transista to le Ve> VE+o this condihn is nokSatis bied Since 12-0-2-23C CVCE Sat Vo =0 ( VEB=IV kvL t Ve6-Talsto. 1-5J+o o.3IB

In-0-06 Asump (AsSume AcepTp IC = 5OXO-06 VCC= 23+VCE ( R2TVCE 12-203) VCE VCE= 6V in Achive It is VCE7O 2 VS0 Kes'n Vo= l3- 2IC=6V Vce te)o av, m) Vob-3 Apply 3-04 A&Sume OXO 46 Q3 MA le -p VCC=QI+VCE 12=QXQ3+ VCE NCE -34 sorically It Cut M si LS So Vo =VCC12V