Sedra smith pdf
Rating:
9,6/10
1232
reviews

What is their percentage difference? What is the maximum power dissipated in the transistor? Here v I is a 6-V peak sine wave, D1 and D2 are ideal diodes, I is a 60-mA current source, and B is a 3-V battery. What is the largest noninfinite available voltage gain magnitude? If the magnitude of the average of each output is to be 12 V, find the required amplitude of the sine wave across the entire secondary winding. . Note that Rin signifies input resistance and R1 and R2 are feedback-network resistors as labeled in the inverting and noninverting configurations. For the nominal value of supply voltage, select a value for resistor R, specified to one significant digit, to provide at least that current.

NextIf the peak value of v I is reduced by 10%, what do the peak and average values of iB become? What condition must apply in addition to the condition in Eq. Specifically, depending on the polarity of the diode, either the positive or negative peaks of the signal will be clamped to the voltage at the other terminal of the diode usually ground. Bookmark it to easily review again before an exam. How many resistors are needed? For the voltage amplifier, the most convenient representation is in terms of the g parameters. If V is nominally 15 V, what value of R is required? What are the relative junction areas? What value of R is needed to cause the output to have a 12-V peak amplitude? What must the ft of the op amp be? Thus the output voltage of the op amp can be expressed as Figure P2. What is the maximum reverse voltage across the diode? How different is the resulting design? What fraction of the cycle does the diode conduct? Comment on the range of validity of the small-signal approximation.

NextYour design should utilize the minimum number of amplifiers and resistors. Derive an expression for the gain as a function of the potentiometer setting x. Also, sketch and clearly label the magnitude frequency response Bode plot of this amplifier. Rather, find a convenient node to connect such a terminal in a redundant way. Assume that the diode has a 0.

NextOp-amp slewing can result in nonlinear distortion of output signal waveforms. Sketch the output signal waveform. Use the Einstein relationship to obtain the corresponding values for Dn and Dp. For each, identify the missing parameter and estimate its value. Find the voltage gain, current gain, and power gain expressed as ratios and in decibels as well as the supply power, amplifier dissipation, and amplifier efficiency. What is the input resistance of your amplifier? For an amplifier offset voltage of 0 mV, but with a bias current of 2 μA and an offset current of 0. What is the input resistance of the resulting current divider? What is the range of gains obtained? For a transistor in the same technology but with an emitter junction that is 32 times larger, what is the saturation current? Show that the gain expression changes to 7.

NextWhy buy extra books when you can get all the homework help you need in one place? Remember to use a factor of safety in your design. Choose relatively low values of resistors but ones for which the input current from each input signal source does not exceed 50 μA for 1-V input signals. Specifically, a voltage divider R5 , R6 connected across the output feeds a fraction β of the output, that is, a voltage βv O , back to the positive-input terminal of the op amp through a resistor R. Disregarding how biasing is to be done, what is the largest possible voltage gain available for a signal source connected directly to the base and a very-high-resistance load? For the purpose of these initial designs, assume no load. Neglect the effect of resistor tolerances on Ad. What are the values of β and the incremental β or β ac that apply? Choose an appropriate standard 5% resistor value refer to Appendix J. Now, consult a table of standard 5% resistor values e.

In this way the output waveform has a nonzero average or dc component, and the circuit is known as a dc restorer. For each design find the value of R and the line regulation. At least the physical class, don't know about online. Subscribe via email and follow on Social media fan pages for latest updates. What is the output signal for a 1-V peak-to-peak sine-wave input with frequency equal to 10f0? Where does the load current come from in case b? Q3 V5 V2 V6 R4 R1 R6 5V Figure P6. Two types of diodes are available: for a forward voltage of 700 mV, one conducts 0. Show, by sketching the various circuit configurations, how this basic circuit can be used to implement the following functions: a b c d power supply.

NextFind the voltage gain, the maximum allowed output negative swing without the transistor entering saturation, and the corresponding maximum input signal permitted. For each device, find iC , β, and α. All capacitors behave as short circuits for signals and as open circuits for dc. Although some data is not available, it is always possible to calculate gm using one of Eqs. What is the output voltage actually obtained? What is the dc voltage at the collector? List the values that can be represented by this scheme. Note that this relationship can be used to obtain the voltage transfer characteristic v O vs.

NextIf the input to the follower is a 1-V step, find the 10% to 90% rise time of the output voltage. What is the corresponding peak input signal? In which direction do they flow? To what value of output resistance does this correspond? What are the gains and phase shifts found for this circuit at one-tenth and 10 times the unity-gain frequency? Compare with the value of gm obtained using Eq. Find the corresponding resistance values obtained with a device having twice the value of W. Comment on how tolerant or intolerant the circuit is to changes in device parameters. Using this value, predict values of the measurements that were accidentally omitted the blank entries. With a voltage divider using some or all of your resistors, how many positive-voltage sources of magnitude less than 9 V can you design? What values of resistors have you chosen? Use the closest standard 1% resistor value see Appendix J.

NextAlso, for a nominal short-circuit output current of the transducer of 10 μA, the amplifier is required to provide a minimum of 1 mA through the load. Assume that R5 and R6 are much smaller than R so that the current through R is much lower than the current in the voltage divider, with the result that vId Figure P2. What is the number of pins required for a so-called quad-op-amp package, one containing four op-amps? Use these data to create specific transistor models of the form shown in Fig. Notice that there is an additional g parameter with no correspondence in the amplifier equivalent circuit. If an adjustable gain is needed, part of R1 can be made variable. What base—emitter voltage would you expect at 0°C? Using a 1-mA current source, the designer wishes to create a reference voltage of 1.

Next