Question

Consider an amplifier circuit using a BJT having IS = 10^(-15) A, a collector resistance RC = 6.8 kΩ, and a power supply of VCC = 10 V. (a) Determine the value of the bias voltage VBE required to operate the transistor at VCE = 3.2 V. What is the corresponding value of IC? (b) Find the voltage gain Av at this bias point. If an input sine-wave signal of 5-mV peak amplitude is superimposed on VBE, find the amplitude of the output sine-wave signal (assume linear operation). (c) Find the positive increment in VBE (above VBE) that drives the transistor to the edge of saturation where VCE = 0.3 V. (d) Find the negative increment in VBE that drives the transistor to within 1% of cutoff (i.e., to VCE = 0.99VCC).

          Consider an amplifier circuit using a BJT having IS = 10^(-15) A, a collector resistance RC = 6.8 kΩ, and a power supply of VCC = 10 V.
(a) Determine the value of the bias voltage VBE required to operate the transistor at VCE = 3.2 V. What is the corresponding value of IC?
(b) Find the voltage gain Av at this bias point. If an input sine-wave signal of 5-mV peak amplitude is superimposed on VBE, find the amplitude of the output sine-wave signal (assume linear operation).
(c) Find the positive increment in VBE (above VBE) that drives the transistor to the edge of saturation where VCE = 0.3 V.
(d) Find the negative increment in VBE that drives the transistor to within 1% of cutoff (i.e., to VCE = 0.99VCC).

Added by Jimmy H.

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