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Figure 1(a) shows a series fed class A amplifier circuit. In order to achieve the maximum efficiency, the Q point must be located at the center of the DC load line as shown in Figure 1(b). This generates the maximum output current swing of Icmax (p – p) RC and the maximum output voltage swing is VCEmax(p – p) = Vcc Assume that the maximum input de power is (1 Vcc Pimax(dc) = Vcc!cQ(max)=Vcc \2° Rc. 2Rc Find the maximum efficiency, 7 of this circuit.

1. For the following circuit assume re = 30.6 1 a. Draw the small signal equivalent circuit. b. Find the input impedance. c. Find output impedance. d. Find the voltage gain. e. Find the current gain. 4.72 10F

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Fill in the table VB VC VE Ic LE I8 fre IT gm 5V Consider the circuit given at the right. 600k 1.5k =0.7, Vauo, B=165) 100uF Vo 1k 100uF a) Perform DC analysis and calculate all VB =? VC:? branch currents, node voltages, and small signal parameters 3K VE=? Rout b) Draw a small-signal equivalent model n Vin Rin 400K c) Calculate Ri, Rout, and Ay=Vou/Vin -5V

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(1) Describe in detail the relative advantages of Class A and Class B amplifiers. In what types of circuits would Class B be advantageous over Class A (1I) With the aid of signal diagrams, describe two forms of distortion you would expect to observe on an output signal of a Class B amplifier. (III) Describe in circuit terms the advantages of a Class AB amplifier.

I need to create a multistage amplifier. With the following specs.

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Draw the DC and AC load line for a transistor amplifier circuit shown in Figure, also describe the optimum operating Point for the given values as follows: Rc = 10 KQ ; RL=20 KQ and V cc = 20 V +Vcc Ic Rc Cc Cc V. out R1 Vin www

The transistor parameters for the circuit in Figure are B, =B2 = 100, VBE1on) = VBE2ton) = 0.7 V, and %3D VA1 =VA2 =0.Find the small signal voltage gain Av = vo/vs. (Note that V-=0.026 V) Vcc=9 V Rib Q1 Vs 1 ko -Ro 20 V 100 Q -ww

Correct the sentence: The aim of using coupling in multistage transistor amplifiers is to transfer DC output of one stage to the input of the next .stage and to isolate the d.c. conditions of one stage from the next stage

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

As a maintenance engineer in a semiconductor company, you are given a task to replace the current version of dc-biasing circuit for a faulty tester machine. This dc-biasing circuit used an n-channel JFET as shown in Figure 2. Re-design a new dc-biasing circuit using an n-channel D-MOSFET that can produce a similar output current, IDQ as the previous circuit. Your tasks are: (i) Calculate the operating point (IDQ and VGSQ) of the dc-biasing circuit in Figure 2. Then sketch the JFET network transfer curve (ID and VGS). (ii) Without changing the circuit configuration, calculate the values of source resistor, RS and RB to achieve this objective. Determine the commercial value of the new RS and RB.    For cost reduction reason, the values of RD, RA and VDD should be maintained.    The chosen D-MOSFET has a maximum drain current of 8 mA and gate-source cutoff voltage of – 15V.    The new RS value should be 3 times larger than the old RS used in the JFET network to compensate for the high…

Q4. For the circuit shown in Figure Q4: i) What is the type of MOSFET and the amplifier configuration? ii) Find the Q-point (Ip and Vps) iii) What is the device transconductance, gm? iv) What are the voltage gain and output voltage? v) Draw the input /output voltage waveforms showing the phase relationship between them. Be sure to label them properly. +20V IDON = 15 mA@ VcsON = 6V VGSTH = 1V 1kQ Rp C2 10M2 Ro1 out Vin 3.3MQ Ra, 47003 Rs 50mV Figure Q4

1. How does the voltage gain compared to the power gain. 2. In which mode does all small signal amplifier work? 3. In class A power amplifier why the power dissipated at no input signal is greater than with the input signal?

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circuits by using the small signal models of the transistor. Assume the Early voltage of the transistors are infinitely large. Calculate the small-signal input and output impedances of the following Vcc R1 R1 Rout VB RE Rin R2

Design an Inverting Summing amplifier to add 0.1 Volt, 0.2 Volt and 0.3 Volt. Vo should be obtained as 6 V. Draw the circuit diagram and derive the expression as wellI

........ (Figure-1) R. RB= 380kN,Rc= 1kN B = 100, VBB = Vcc=12V RB ww Vec CC ......... I, V CE СЕ V ВЕ BB Q-1-b) Describe briefly the input / output characteristics and application of Common Emitter BJT Configuration

Design a linear amplifier, based on a bipolar junction transistor 2N3904 in common emitter configuration. The supply voltage is 28V. The quiescent operating collector current for the amplifier should be around 10mA. The data sheet for the transistor shows that the DC current gain at this operating current is about 200. Draw the circuit diagram of your design. Label all the components in the circuit. Show all the voltages and currents that you use for calculations in your design. Label them using consistent naming convention.

5, a) Determine Vdsat when ID=.5 mA. b) Determine Kn when ID = 0.5 Amps. (Show your work!) c) Determine VTN. (Show your work!) d) Vgs Consider the circuit and corresponding graph, shown below. ID (mA) 0.60 0.50 0.40 0.30 0.20 0.10 0.00 0 0.5 Vds 1 1.5 2 2.5 Vds 3 3.5 4 4.5 5 -Vgs = 1V - Vgs = 1.1V - Vgs = 1.2V - Vgs = 1.3V

Figure 4 shows a differential amplifier where the input voltage is Vin = Vil the output voltage is Vout - Vi2 and %3D Vo- (a) What kind of amplifier is it? Draw the small equivalent circuit and calculate the differential voltage gain G, in the case of balanced input and unbalanced output. For the calculation, consider the output resistances roi of the two transistors as open circuits (negligible current flowing in them). Show the detail of the calculation and state any assumption. (b) (c) What is Gv if you include the output resistances roi in the analysis? For the balanced input and identical transistors, the current variation in M1 and M2 are equal and opposite: i1 = -i2 (the current flowing in Rs is i- 0). V DD Rp1 Rp2 VinLM, M2 V2 V'ss =0 V Figure 4

Figure 4 shows a differential amplifier where the input voltage is Vin = Vil - Vi2 and the output voltage is Vout = Vo. Q4 (a) What kind of amplifier is it? Draw the small equivalent circuit and calculate the differential voltage gain G, in the case of balanced input and unbalanced output. For the calculation, consider the output resistances roi of the two transistors as open circuits (negligible current flowing in them). Show the detail of the calculation and state any assumption. (b) What is G, if you include the output resistances roi in the analysis? For the balanced input and identical transistors, the current variation in M1 and M2 are equal and opposite: i = -i2 (the current flowing in Rs is is = 0). (c) Vpp Rp1 Rp2 Vo Vil M1 M2 V12 Rs Vss = 0 V SS Figure 4

It is connected to the input of a transistor (BJT) amplifier circuit with a gain of "-50" with a peak value of 100mV. a sine sign is applied a) Draw the circuit. b) Underline the input and output voltages by specifying their values.

The DC Current Gain of a Transistor is Select one: a. Ratio of Collector Current to Base Current b. Ratio of Base Current to Collector Current c. Ratio of Emitter Current to Collector Current d. Ratio of Base Current to Emitter Current

this question is analog electronics question

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4.3 An R-2R DAC ladder of resistors has its output fed through an inverting operational amplifier with a feedback resistance of 2R. If the DAC is 3 bit and the reference voltage is 5 V, determine the resolution of the converter. 4.5 What is the conversion time for a 12-bit ADC with a clock frequency of 1 MHz?

Q4: Answer THREE only. A. List four sources of possible errors in instruments. B. Define the random error. C. Classify, in a table, the bridges used for measuring component values and their application. D. Define the signal conditioning element. What are the main achieved processes in this element with a brief explanation of cach process? E. Draw the block diagram of analog to digital converter (ADC). F. what are the typical applications of the linear multiplier including? describe only one type in details with diagram.