Describe how a wheatstone bridge works, , Electrical Engineering

Explain all of your steps and follow a logical train of thought. Clearly describe all design rationale.

1)  Design a device to deliver a sinusoidal 500kHz pulse through a piezoelectric device, given a signal source that can deliver 10 mV (peak-to-peak) voltage at that frequency. Use realistic circuit components and fully characterize the circuit input and output impedance, and gain.

2)  You have designed an instrumentation amplifier using a standard op-amp with an open-loop gain of 100 dB at DC. You notice that the gain of your circuit starts to fall at about 1kHz, even though you have not used any inductors or capacitors in your circuit. Explain what may have caused this. Sketch any supporting figures.

3)  You are trying to measure the ECG of a baby in utero. Describe why and how this could be done, and whether it could be done noninvasively. Explain limitations to detecting and differentiating the signal from maternal "noise", and how these limitations might be overcome.

4)  Describe how a wheatstone bridge works, and design one to detect a 10 ohm change in resistance. What determines the precision of your measurement? Give an example with realistic components.

5)  Explain why electrical current can flow through an insulator sandwiched between two conductors. What happens (physically) when superconductors are used instead, and what can this effect be used to measure? Estimate the size of a typical characteristic current of a junction (J_0), where J=J_0sin(p_1-p_2), where p_1 and p_2 are the phases on each side of the insulator. Estimate the size of the maximum current generated by a typical SQUID detector.

6)  A colleague tells you she has made some nanometer-sized particles that act as tiny injectable SQUID detectors. She tells you the particles operate by sensing a field in the SQUID, and transmitting a current to a conductor surrounding the particles, which in turn changes the local magnetic field. This is in turn detected with MRI. What, if anything, makes you skeptical of her nanoparticles? Could SQUID detectors be implanted? Can they be made on a nm scale?

Posted Date: 2/22/2013 2:56:30 AM | Location : United States

Related Discussions:- Describe how a wheatstone bridge works, , Assignment Help, Ask Question on Describe how a wheatstone bridge works, , Get Answer, Expert's Help, Describe how a wheatstone bridge works, Discussions

Write discussion on Describe how a wheatstone bridge works,
Your posts are moderated
Related Questions
Q. Illustrates typical thermal noise waveform? In general, any physical resistor or lossy device can be modeled by a noise source in series with a noiseless resistor, as shown

Q. Addition and integration can be combined by the summing integrator circuit shown in Figure. With the given component values and input waveforms, sketch v o when S is opened at

Explain Atomic structure and Energy Band Diagram of Silicon. Silicon : It is other most commonly used semiconductor. Atomic number of it is 14. The no. of electrons in first,

Q. Let v(t) = Vmax cos ωt be applied to (a) a pure resistor, (b) a pure capacitor (with zero initial capacitor voltage, and (c) a pure inductor (with zero initial inductor current)

2's Complement Multiplication Two's complement multiplication follows the similar rules as binary multiplication. For illustration, (-4) × 4 = (-16)              1111

RST Restart Instructions Restart instructions  are one byte call instructions. Called location for each restart instruction is  predefined on page 0 ( read only memory). They

Data analysis in GIS: Therefore, GIS consists of the following: 1.  Database - for storage and retrieval of information. The database forms the foundation of the GIS syst

What is the process of metal removal in electrochemical machining? What are the basic functions of electrolyte in ECM? Illustrate the following key terms in electrochemical mach

Discuss description of insulating materials on the basis of physical and chemical structure Insulating materials, on the basis of their physical and chemical structure may be d

Q.  A shunt generator gives full load output of 30 kW at a terminal voltage of 200V. The armature and field resistance are 0.05? and 50? resp.. The iron and friction losses are 10