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Suppose that we are designing a cardiac pacemaker circuit. Thecircuit is required to deliver pulses of 1-ms duration to theheart, which can be modeled as a 500-Ω resistance. The peakamplitude of the pulses is required to be 5 V. However, the batterydelivers only 2.5 V. Therefore, we decide to charge two equal-valuecapacitors in parallel from the 2.5 V battery and then switch thecapacitors in series with the heart during the 1-ms pulse. What isthe minimum value of the capacitances required so the output pulseamplitude remains between 4.9 V and 5.0 V throughout its 1-msduration? If the pulses occur once every second, what is the average current drain from the battery? Use approximate calculations, assuming constant current during the output pulse.Find the ampere-hour rating of the battery so it lasts for five years.
A tree-phase, 60Hz, 5MVA synchronous generator has balanced line-to-line voltages of 8320V at its terminals. if the generator is supplying power to delta-connected, balanced load of 5MVA at a 0.8 lagging power factor
ON a three-state bus, ten FCT three-state buffers are driving ten FCT inputs and a 4.7kΩ pull-up resistor to 5V. Assuming that no other devices are driving the bus, estimate how long the bus signal remains at a valid logic level
v(t)=20te^( -40t ) and i(t)=50te^( -40t ) for t>=0 both v and i are zeros for i
A hemispherical surface defined by a radius r = 5 [m] and z>0 has a surface charge density of RHOs = 2(sin theta)(cos^2 phi) [C/m^2]. Find the total charge on the surface.
A 4.5-volt series circuit consists of two resistors. Resistor A has three times the resistance as resistor B. An ammeter records a current of 160 mA of current. Determine the resistance values of resistors A and B.
Laboratory measurements on a dc voltage source yield a terminal voltege 75V with no load connected to the source and 60V when loaded with a 20 Ohm resistor. A)what is the thevenin equivalent with respect to the terminals of dc voltage source
A Si sample is doped with 1014 boron atoms per cm3. (a) What is type of semiconductor is it in terms of carrier type. What are the minority and majority carriers.
The maximum voltage that James can apply to this capacitor is limited by Vmax = Kd, where K is the breakdown strengh of the dielectric. deriven an expression for the maximum energy that can be stored in this capacitor in terms of K and the volume ..
A. What percent had none of these defects. B. What percent had at least one of these defects. C. What percent were free of type X and/ or type Y defects D.What percent had not more than one of these defects
Design a NMOS resistive load inverter for: VDD = 5V P = 0.2 mW when Vlow = 0.1V kn = 60 micro Ampere / V^2 VTN = 0.25V Find the load resistor and the W/L ratio for the switching transistor.
Using particles, generate a current of 100 amps. If the particles are 0.0015m in length, and each particle has a charge of 3.06x10^5 coulombs, what speed must each particle be traveling to generate the 100 amps
A uniform plane E field, polarized in the x direction travels in the negative y direction in dry earth (Er = 16, Mu(r) = 1) with a phase constant Beta = pi rad/m and an amplitude of 4.0 A/m. If this field has its maximum value at t = 0, y = 2
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