Complete with calculations the following. 1. The mid-band Av=100, the lower critical frequency is 1kHz, the actual Av at f-10Hz is..... 2. Three stages of identical amplifier, every single stage has f₁=1kHz, f-20kHz, Av-10, the total fur, fHT. AVT are...... 3. Voltage series feedback circuit with A=100, B=0.09, Zi=10k2, Zo=100k, the Avf, Zif, Zof are 4. Negative feedback leads to ... reductions. 5. An Op-Amp. with CMRR of 40dB, Ac=0.25, the Ad is...... D. +8 Av 6. If Vin1= Vin2= Vin3= Vin4-3V of summing amplifier with unity gain, the Vo is

The term duty cycle refers to the amount of time a signal is complete cycle. A. off compared to the period of one B. on The output voltage of op-amp is positive saturation, when the voltage applied to the input is greater than the input. A. inverting B. noninverting A square wave that is 20V at its high state and OV when it is off will produce an average DC when its duty cycle is 75%. Formula: VOUT = Duty Cycle * Peak voltage voltage of A. 7.5V B. 10V C. 15V

The amplifier configuration shown in figure below is a a) common emitter b) common collector c) common base d) base follower configuration, where the is at ac ground, and the ac output voltage a) collector B) emitter C) capacitor D) base with the input. A) amplified and 180deg out of phase B) almost equal and 180degree out of phase C) almost equal and in phase D) amplified and in phase

Draw a n-p-n transistor connected in circuit common base (CB).Draw the input current-voltage characteristic, the output current-voltage characteristicsand the graph giving dependence of the output current as function of the input current.Define the amplification gain of this circuit.

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Q1 Design an operational-amplifier circuit using two inverting configurations to produce the output vo = +201 + 0.5v2 – 0.2v3 – 1v4. Choose feedback resistor Rf = 220kN for each amplifier. %3D | -

Figure 6 shows a circuit where feedback is provided between the drain and gate of the transistor M1 Q6 Draw the small signal equivalent circuit of the open loop circuit obtained by breaking the loop at the gate of transistor M1 (suitable for the analysis in the mid band frequency range). Consider Cg as short circuit in the model and state any assumption. (a) (b) State the necessary conditions for the oscillation to occur in the circuit. Using the conditions from (b), derive an expression for the amplifier oscillation frequency fo. (c) Derive the necessary condition for the oscillation to occur in the circuit and state if you can conclude that the circuit will oscillate when considering the values of the inductances L2 = 8 LI = 2 mH; capacitors C = 2 nF; transconductance of the transistor gml = 1.4 mS; and resistors R1 = R2 = Rs : 10 k2. (d) %3D L2 L, R, Cg. C Vout Cp M1 R2 CG Rs Cs Vss = 0 V Figure 6

8. For the collector feedback configuration, determine : +16 V (a IB (b) Ic () Vc 3.6 kQ 470 k2 Vc IB B = 120 0.51 k2

What is a class AB amplifier?

E AND F PLZ