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Suppose there is another 20-ms light pulse that may strike the cell in given Problem, but it is of lower intensity, so that the final resistance would be . Call this one and that of Problem P2. Devise a system that will latch on a red LED if strikes the cell, or a green LED if strikes the cell. Each time a pulse strikes the cell, the latches are cleared and the appropriate LED turned on.
ProblemA CdS cell has a time constant of 73 ms and a dark resistance of 150 kΩ. A light pulse that is only 20 ms in length strikes the cell. If the intensity of the light pulse is such that the final resistance would be , plot the resistance versus time for 100 ms. What is the resistance at 20 ms?
the color code on a resistor specifies the resistance as4.7kOhms. A multimeter measured the resistance as 4.688kOhms. What is the nominal resistance of the resistor
if maximum frequency audible to a human ear is 20,000 Hz, at what rate must the analog signal from a microphone be sampled when converting it to digital
How many flip flops are needed to build a register file with 32 16-bit registers where register 0 is always 0x0000?
A sphere of radius 100mm has a charge 4 C uniformly distributed throughout its volume. Find the magnitude of the electric field at distance 100.1 mm from the centre of the sphere.
Calculate the amplitude (peak value) of the open-circuit phase voltage measured when the rotor is turned at 60 rev/sec.
Obtain a timing diagram for a positive-edge-triggered JK master-slave flip-flop during four clock pulses. Show the timing diagrams for C, J, K, Q and Q'. Assume that before the first pulse: output Q is equal to 1, J=0 and K=1.
A wound-rotor induction motor is operating at rated voltage and frequency with its slip rings shorted and with a load of about 25 percent of the rated value for the machine.
Given the forward-path transfer function of unity-feedback control systems, apply the RouthHurwitz criterion to determine the stability of the closed-loop system as a function of K, Determine the value or K that will cause sustained constant-ampli..
ECE 511: Analog Integrated Circuits Fall 2016 Assignment. Complete the table on the following page related to the operating point for all transistors. This should help in computing the rest of the homework questions. I recommend a spreadsheet for t..
Design a Common Emitter amplifier with no bypass capacitor which has an overall gain of AV=-15 when the input voltage has a source impedance (Rsource) of 2k, and the amplifier itself has an Rin= 4k, Rload= 6k,VCC= 15V,VBE= 0.7V
Using a 1 mA current source, the designer wishes to create a reference voltage of 1.25 V. Suggest a combination of series and parallel diodes that will do the job as well as possible. How many diodes are needed. What voltage is actually achieved.
a. The mass of an electric car is 900 kg including the passengers. A single motor mounted on the front wheels drives the car, and the radius of the wheel is 0.3 m. The car is going downhill at a speed of 50 km/hr, and the slope of the hill is 30 d..
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