An operational amplifier (Op-Amp) circuit is built to measure the temperature of an exothermic process in a lab. The circuit uses a thermistor (Resistance Temperature Detector) to monitor the target temperature and a voltmeter to measure the output voltage of the Op-Amp ciruit. Since the thermistor is a passive device, it requires and external battery to provide useful input, as shown in the ciruit diagram in attachment. The relationship between the resistance and temperature in the thermistor is relatively linear over a Temperature (T) range of 0deg Celsius and 200deg Celsius and is defined by Rt = 100 + 0.005*T. What will the Voltmeter read if the temperature of the reaction is 150deg Celsius? What are the potential sources of error in theis circuit and what might be done to improve any error that exists?

Essentially what you have here is an inverting amplifier. A picture of this is shown in pic1.jpg. I will refer to the labels in this picture throughout this answer.

The output voltage Vo from the amplifier is given by:

Vo=-(R2/R1)Vin

where Vin is the input voltage.

What the question is asking you to do is to find Vo (which is what the voltmeter would read) when the temperature is 150 degrees Celsius.

In your question:

Vin=1.5V
R2=2000ohm
R1=100+Rt ohm

And you know that at T=150, Rt=100+0.005*T=100.75

so ...

Solution Summary

Essentially what you have here is an inverting amplifier. A picture of this is shown in pic1.jpg. I will refer to the labels in this picture throughout this answer. The output voltage Vo from the amplifier is given by: Vo=-(R2/R1)Vin where Vin is the input voltage. What the question is asking you to do is to find Vo (which is what the voltmeter would read) when the temperature is 150 degrees Celsius.

a) Determine the gain-frequency characteristics of a common operationalamplifier.
b) Calculate the cut off frequency of an op-amp having characteristics
Avd - Large-signal differential voltage amplification = 20
B1 - Unity gain bandwidth = 1MHz
c) Estimate the input offset voltage for the Multisim 741 model of f

3.
a) Explain what is meant by 'unconditional stability' in an op-amp.
b) Figure 2 gives the open-loop response of an uncompensated op-amp. Compensation is to be applied to the amplifier to make it unconditionally stable. Estimate the frequency at which the breakpoint of the compensated response must occur.
See attachme

Please look at the attached image of an audio amplifier. I know capacitors are storage elements and so forth but how do you know what a capacitor is doing at certain locations? What does terminal 7 capacitor do?

1. Show that gain rolls-off at -6 dB/octave for a passive LP filter.
2. (a) Write down the expression for the frequency-dependent open-loop gain of an operationalamplifier. Sketch the magnitude of the open-loop gain of an operationalamplifier as a function of frequency. Explain what is meant by a `single-lag' response of an

a) Define the following parameters of an operationalamplifier.
i. Input offset voltage
ii. Input bias current
iii. Input offset current
and draw the equivalent circuit for determining their effects.
b) Please see the attachment.

The attached figure shows an amplifier circuit.
- Sketch the small-signal equivalent circuit of the amplifier and use it to estimate the voltage gain.
- Attempt to calculate the quiescent value of VOUT.
Hint : Apply the appropriate equation:
IDS=2xIDSS/Vp^2(VDS[VGS-VP]-VDS^2/2)
Or
IDS = IDSS(1-VGS

A power amplifier when driven by a current source of 5mA rms and a source resistance of 8k, delivers 12.5W signal power to an 8k load resistance. Find peak to peak value of the output voltage. If the input voltage to the amplifier shows 5V rms, determine the voltage gain of the amplifier. Show how you arrived at your answer.

A T-attenuator is required to be inserted between an amplifier and a transmission line. The power level to the line is required to be restricted to -3 dB. The gain of the amplifier is fixed at 24 dB and its maximum input signal is at a level of -10 dB.
Sketch a block diagram of the arrangement and calculate suitable values of

An amplifier is designed to handle frequencies around 9 GHz. The bandwidth of the amplifier is 2 GHz with a center frequency of 9 GHz. Two signals are input to the amplifier. It is observed with a spectrum analyzer that many spurious responses exist. Two spurs are measured at 9.9 GHz and 8.1 GHz. If these responses are due to ni

Use the circuit shown below to design an inverting amplifier having a gain of -8 and an input resistance of 120 k ohms. Give the values of R1 and R2.
See attached file for full problem description.