Consider an npn BJT gain stage loaded with an ideal current source (see the schematic for Problem 3). The current source value was set to be 0.1 mA and the BJT bias VBE was adjusted accordingly to keep the BJT in the forward-active mode. The BJT Early voltage was VA= 35 V. The circuit operated at room temperature T-300K (thermal voltage was V = kBT/e= 26 mV). Estimate the value of the voltage gain for AC signals. VCC +3Vdc VBE Vsig1 10mVac OVdc 0 Q1 npn + Vout_AC Problem 3. n-p-n BJT gain stage loaded with an ideal current source.