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ECG Amplifier Project Description For the semester you are to build an amplifier suitable for a so called "three lead" electrocardiogram (ECG). Various electrode placements are shown below. The amplifier should sense the cardio signal (POS and NEG) and have a differential gain of approximately 1000. In addition, the amplifier should provide a common mode feedback circuit (usually to the right leg or lower torso) to cancel out large common mode interference from involuntary muscle contraction, 60 Hz pickup, etc. The waveform is to be displayed on an oscilloscope. The unit will also include a three digit display that indicates pulse rate. The whole system should be compact, enclosed in a box, and powered by two coin cell batteries (CR2450 or similar). Power draw from the batteries should not exceed one watt. We will provide the adhesive electrodes and the standard snap leads. The output of the system should provide a 1-2 V output amplitude ECG waveform for a healthy adult with low noise and should quickly stabilize when the patient is not moving
Find the induced emf as a function of time, for a square wire loop of side length 3m, in the x-y plane with one corner at the origin, due to a changing magnetic flux density B =5xycos(10t)z ˆ Wb/m2
What is the capacitance ratio for the capacitors with Ta2O5 and oxide/nitride/oxide dielectrics for the same thickness, provided the oxide/nitride/oxide has thickness ratio 1:1:1 for the oxide to the nitride
Find the intrinsic gain of an NMOS transistor fabricated in a process for which k'n=200uA/V^2 and V'A=20Vum. The transistor has a 0.5-um channel length and is operated at Vov = 0.25. If a 2-mA/V transconductance is required, what must Id and W be
(a) Print the lowpass FIR filter coefficients and plot the frequency responses using MATLAB. Label and print your graph. (b) Determine the ripples in both pass-, and stop bands. Identify them on your plots.
The length of a wire of a potentiometer is 100 cm, and the e.m.f. of its stand and cell is E volt. It is employed to measure the e.m.f. of a battery whose internal resistance is 0.5 ohm. If the balance point is obtained at l =3..
A silicon ingot is doped with 1016 arsenic atoms/cm3. Find the carrier concentrations and the Fermi level at room temperature (300K). Hint: assume complete ionization of impurity atoms at room temperature.
If the application program creates a message of 150 bytes and each layer (including the fifth and the first) adds a header of 20 bytes to the data unit, what is the efficiency (the ratio of application layer bytes to the number of bytes transmitte..
A container with a plunger compresses one pound mole of an ideal gas from 1 atmospheres pressure to 10 atmospheres. Calculate the amount of work done if the process is considered to be polytropic.
a conducting rod having a mass density 2 kgm is suspended by two flexible wires in a uniform magnetic field which
what sources to pick to get total absorbed power and total delivered power, since a,e,f, and h absorb and b,c,d,and g supply and for total they suggest a+c+d+e+c=absorbed and b+g+f=delivered
An infinite sheet of uniform (constant) charge density (rho)s0 [C/m^2] is situated coincident with the x-y plane at z = 0. The sheet has a hole of radius a centered at the origin. Find the electric field vector at points along the z-axis.
In most situations it is also desirable to send information from the process to be controlled--in this case the 500-gallon tank--to a central station for processind and storage. this information can be transmitted and processed in different ways.
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