funjoke
Member level 3
A cascode amplifier is shown . Given that VCC = 12V, RS = 50Ω, R1= 43kΩ, R2 = 15kΩ, R3 = 12kΩ, RC = 2.7kΩ, RE = 1.2kΩ, RL = 4.7kΩ, CB1 =10μF ,CB2 =CC2=4.7 and CE = 100 . Assume junction capacitance Cbe= 9pF, Cbc=3pF, thermal voltage VT =25.8mV, βac=150 and VBE=0.7V for both transistors
(i) Determine all high cutoff frequencies due to Cbe and Cbc.
can anyone got the formula of how to find VB1 .i use the (R2/R1+R2)VCC.but the answer not correct.
(i) Determine all high cutoff frequencies due to Cbe and Cbc.
can anyone got the formula of how to find VB1 .i use the (R2/R1+R2)VCC.but the answer not correct.