Question

design (and draw ) an inverting amplifier by using op pamp with a voltage gain equals to -10 (Acl=Vout/Vin)

Answer #1

1. Design an inverting amplifier with gain of ×10, and input
impedance of 100Ω.
2. Design a non-inverting amplifier with a gain of ×10. Design
the amplifier so that the output current from the op-amp at maximum
output voltage +15V is no larger than 15 mA.
3. Design a current summing amplifier that finds the algebraic
sum of two input voltages: VOUT = - (V1 +
V2) . Design the amplifier so that output current from
the op-amp at maximum...

1. For an inverting amplifier with a voltage gain of -10 and an
input resistance of 1 kilohm, calculate the value of the feedback
resistor (Rf) in kilohms.
2. For a non-inverting amplifier with a voltage gain of 11, what
is the ratio of R2 to R1?
3. Which pin of the 741 op-amp should be connected to the
positive supply voltage (e.g. +15V)?
4. For an inverting amplifier with a voltage gain of -20 and an
input resistance of...

a)What is the formula for the gain of an inverting operational
amplifier circuit with input resistor Ri and feedback resistor Rf?
Draw the circuit.
b)What is the formula for the gain of a non-inverting
operational amplifier circuit with input resistor Ri and feedback
resistor Rf? Draw the circuit.
c)What is the gain of a voltage follower operational amplifier
circuit? What is the input impedance of this circuit? Draw the
circuit.

Suppose that we design a noninverting amplifier using 5%
tolerance resistors and an ideal op amp. The nominal amplifier gain
is +2. What are the minimum and maximum gains possible, assuming
that the resistances are within the stated tolerance? What is the
percentage tolerance of the gain?

Design an op-amp circuit that will provide an output voltage
equal to the average of three input voltages. You may assume that
the input voltages will be confined to the range -10V ?Vin ?10V.
Verify your design by using Multisim software and a suitable set of
input voltages.

Using a 741 op-amp for every stage, design this circuit:
The input stage has a voltage gain of 10 and input impedance of
50 K?.
The low pass filter stage has a Sallen-Key (VCVS) third order
butterworth response and a cutoff frequency of 5KHz.
The output buffer stage has a voltage gain of 10.

Design a multi-stage op-amp network that takes an input signal
of vin(t) = 5 cos(120πt) V and outputs vout(t) = 2.5 + 2.5
sin(120πt) V. All resistors used must have values of at least 1 kΩ.
Verify your design behaves as required using LTSpice XVII. (20
points)

Consider an op-amp connected in an inverting configuration to
realize a closed-loop gain of -100 V/V utilizing resistors of 1k
and 100 k. A load resistance RLis connected from the output to
ground, and a low-frequency sine-wave signal of peak amplitude
Vpeakis applied to the input. Let the op amp be ideal except that
its output voltage saturates at 10 Vand its output current is
limited to the range of 20 mA.
1) For RL = 1k, what is the...

1. Calculate the input difference in potential (eNI − eINV) for
an op amp amplifier with an output voltage of 10 V and an open loop
gain of
a. 2000
b. 30,000
2. Locate specifications for the LM741 and the LF411 (National
Semiconductor). For each determine the worst case a. input
impedance.
b. open loop gain
c. gain bandwidth.
3. Assuming β = 0.05, and AOL = 2000, calculate the closed loop
gain using the approximation.

Design an instrumentation amplifier and develop the literal
equation of your gain.

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