GATE EC 2022: Analog Circuits Quiz 7
Attempt now to get your rank among 140 students!
The purpose of emitter bypass capacitor in a CE BJT amplifier is to
Calculate the input resistance Ri
(in ohms) of the common base amplifier shown.
(consider C1, C2 to very large)
(choose RE = 1kΩ, R1 = 18kΩ,
R2 = 18kΩ, β = 99, rπ =1kΩ, RC = 5kΩ, VCC = 15V)
The common emitter circuit, with bypass capacitor removed, is shown in Fig. The hfe
= 75, hoe
= 1μs, hre
= 0, hie
Find the input impedance, Zin (in kΩ).
For the amplifier shown in the figure below, the BJT parameter are VBE
= 0.7 V, β = 200, and thermal voltage, VT
= 25 mV. The voltage gain of the amplifier is
In below figure, both transistors are identical and have a high value of 'β', VBE
=0.7V and VT
= 25 mV. The small signal low frequency voltage gain AV
) is equal to
For the following given circuit, find the small signal voltage gain for β = 80 & VA
= ∞ and VT
= 26 mV.
- 140 attempts
- 2 upvotes
- 0 comments
Aug 7ESE & GATE EC