Homework Answers
Answer.
(b),(c ) and (d) are correct answers, and (a) is a wrong answer.
Explanation.
a) In an inverting op amp voltage is taken from the output and fed as current at the input, hence it uses shunt shunt feedback.
(b)current mirror circuit current is taken from the output and fed us voltage to the input, hence it uses series series feed back.
(c) In a transconductance amplifier current is taken from the output and the input is fed with voltage. Hence it uses series series topology.
(d) In a tranresistance amplifier voltage is taken from the output and the input is fed with current. Hence it uses shunt shunt feedback topology.
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Find the induction process of A, β, Ro, Ri. EXAMPLE 10.10 Figure 10.27 shows a feedback current amplifier formed by cas...
Find the induction process of A, β, Ro, Ri.
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please make sure you are correct
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Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows...
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(a) Design an inverting amplifier by choosing suitable resistor values for R1 and R2 to produce...
(a) Design an inverting amplifier by choosing suitable resistor
values for R1 and R2 to produce a gain of 5 when both switches
Sw1 and Sw2 are open.
(b) Design the bias input circuit by choosing suitable resistors
R3 and R4 such that the voltage vb will be 0.5V if the
positive power supply of the op-amp is connected to a 5V battery.
Again both switches are open.
(c) Given Sw1 is open, the amplifier is turned on for
enough...
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Laboratory 1: operation amplifier characteristics A. Objectives: 1. To study the basic characteri...
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Laboratory 1: operation amplifier characteristics A. Objectives: 1. To study the basic characteristics of an operational amplifier 2. To study the bias circuit of an operational amplifier B. Apparatus: 1. DC Power supply 2. Experimental board and corresponding components 3. Electronic calculator (prepared by students) 4. Digital camera (prepared by students for photo taking of the experimental results) 5. Laptop computer with the software PicoScope 6 and Microsoft Word installed. 6. PicoScope PC Oscilloscope and its accessories. 7. Multimeter...
Find the induction process of A, β, Ro, Ri.
EXAMPLE 10.10 Figure 10.27 shows a feedback current amplifier formed by cascading an inverting voltage amplifier u witha MOSFET Q. The output current I, is the drain current of Q. The feedback network, consisting of resistors R, and R, senses an exactly equal current, namely, the source current of Q, and provides feedback current signal that is mixed with I, at the input node. Note that the bias arrangement is not...
please make sure you are correct
1. Select configuration for a single-transistor amplifier with a gain of 30 dB and input resistance of 5 Mohm. A) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage amplifier. 2. Select configuration for a single-transistor amplifier with a gain close to 0 dB and input resistance of 5 Mohm and load resistor of 50 ohm. a) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage...
Question 4: Figure 4 In the series-shunt feedback amplifier shown in Figure 4, the transistors are biased with ideal current-sources 1, 0.1mA, 12 1mA, the devices operate with VE0.7V and t = 100. The input signal V, has a zero DC component. Resistances are (a) If the open loop gain is large, what do you expect the closed-loop gain A, -V/V, to be? Give both an expression and its approximate value (b) Find the DC emitter current in each of...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows a series regulator connected to the output of an unregulated power supply. The transistor has B =50, and a 6 volt Zener diode is used. When the load current, Il, is 1 amp the de input voltage from the unregulated supply, Vin, is 11 volt, VBE = 1 volt and the Zener diode current, Iz, is 20 mA. For these conditions, calculate Iz (i)...
Please choose the correct responses below: The input offset voltage is proportional to temperature changes and the mismatch in load resistors An active load circuit is a current mirror with improved voltage gain for single ended output, stability via negative feedback and saves area on an IC The differential output CMRR of a matched MOSFET pair depends on the output impedance of current source providing bias at the common source. Input offset bias current is caused by mismatch in temperature...
QUESTION (5) The following series-shunt feedback amplifier is already biased properly. +VDD I Rp2Z Rois Tove M a) Identify the feedback network (B circuit) and provide an expression for B. Also give an expression for the ideal or upper-bound value of the closed-loop gain Af. You can neglect the output resistance ro for Mi and M2. (6 points) b) Determine the ratio Rz/Ri that will provide an ideal closed-loop gain of 10 V/V. If R1 = 1 k12, what should...
(a) Design an inverting amplifier by choosing suitable resistor
values for R1 and R2 to produce a gain of 5 when both switches
Sw1 and Sw2 are open.
(b) Design the bias input circuit by choosing suitable resistors
R3 and R4 such that the voltage vb will be 0.5V if the
positive power supply of the op-amp is connected to a 5V battery.
Again both switches are open.
(c) Given Sw1 is open, the amplifier is turned on for
enough...
QUESTION 5 Consider the circuit diagram below. Choose the correct answers about the circuit below. More than one may be correct. R2 = 5760 W R576 w А R = 576 120 V The equivalent resistance of the circuit is 864 Ohms. The voltage across the resistor R1 moving clockwise from the positive side of the battery is equal to the voltage across the parallel combination of R2 and R3, 60 V. The current supplied by the battery is 0.14...
thanks
Laboratory 1: operation amplifier characteristics A. Objectives: 1. To study the basic characteristics of an operational amplifier 2. To study the bias circuit of an operational amplifier B. Apparatus: 1. DC Power supply 2. Experimental board and corresponding components 3. Electronic calculator (prepared by students) 4. Digital camera (prepared by students for photo taking of the experimental results) 5. Laptop computer with the software PicoScope 6 and Microsoft Word installed. 6. PicoScope PC Oscilloscope and its accessories. 7. Multimeter...
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