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Assignment - Theoretical WorksheetSection 3 (Assessment Criteria 3.1)
1. a) Draw the Schematic diagram of a Power Supply with the following specification:230V Input VoltageDouble Pole On / Off Switch1A Input Fuse8A Output FuseTransformer2 x 120V primary windings2 x 12V secondary windingsFull wave rectificationCapacitor SmoothingTransistorized Voltage StabilizationOutput = 12V @ 8 Ampsb) Show how an LED with Vf = 1.7V and Vf = 10mA can be connected to indicate the presence of an output voltage .c) Explain how the above circuit would be built into an enclosure employing Class I protection.
2. a) Obtain and provide a printed table of preferred value resistors for generalpurpose design circuits.b) Using only preferred values of resistors and the Class A Amplifier Circuit defined in Section 2 Q4, complete the design given the following parameters: Load Current = 5mAVoltage across RE = 2VLowest input frequency = 50 HzTransistor:hfe = 50 Vice = 4V Vbe = 0.5VFind preferred values for R1, R2, RL, RE and CE b) Draw the complete schematic.
3. a) Show how a switch and resistor can be used to create a logic level 1 or 0 for a digital input circuit.b) Obtain a data sheet for a Passive Infra Red Detector and show how it can be configured to provide a logic level 1 when it detects the presence of a person in a room.c) Obtain a data sheet for a light sensor module and show how it can be configured to provide a logic level 1 when the outside light level is in darkness.d) Design a Logic circuit to give a logic level 1 when it's dark outside and a person has just walked into a room.e) Show how the above circuit could be used to switch the room light on using an isolation relay using a Field Effect Transistor.f) Explain why the light sensor cannot be placed in the same room as the person.g) Explain the difference between CMOS and TTL Logic families
a network has a 5-muF capacitence in series with the parallel combination of a 12 mu-F capacitence and an 8mu-F capacitence. Sketch the circuit diagram and determine the equivalent capacitence of the combination.
Write a program in C that reads 20 integers from the user and sums the odd numbers together and the even numbers together. The program is to output the ratio of the odd numbers to the even numbers with a precision of up to 3 decimal digits.
Lets assume that one electron is removed from each atom and these electrons are all removed from the penny to a distance such that the force of attraction between the positively charged penny and the removed group of electrons is 2.3 N.
find the complete functions, p(t) and w(t) supplied by the element, not just a number, and graph p(t) and w(t). Choose appropriate intervals of time for your graphs. Assume that both v(t) and i(t) are zero for t
Write an instruction sequence to configure the SCI subsystem for operation with the following parameters: 1500 baud using a 9 MHz Bus Clock, 1 start bit, 9 data bits, 1 stop bit, no loop back, no idle line use, no wakeup, enabled receive and trans..
The fluid travels through a conduit of negligible resistance; an accumulator is included to smooth out the pulsations of the pump. A hydraulic load (modeled by a fluid resistance R) is connected between a pipe and a reservoir (assumed at zero pres..
(a)The Avengers (Iron Man, Thor, Captain America, The Hulk, Black Widow, and Hawkeye) are dramatically posing left-to-right for a movie poster. How many unique leftto-right arrangements are there
Suppose that the source charges of the two previous problems are present together. The potential at infinity is defined to be 0. a. Is the potential at the point (0.5, 0.5, 0.5) positive, negative, or zero b. Is the potential at (4, 4, 4) positive
An AM modulator operates with the message signal m(t) = 6cos(10πt) - 4sin(30πt) with unmodulated carrier: 50cos(30πt) and index of 0.1 Write the equation for mn(t) the normalized signal with minimum value of -1.
A one-dimensional infinite potential well with a width of 12 Ao contains an electron. (a) Calculate the first two energy levels that the electron may occupy. (b) If an electron drops from the second energy level to the first, what is the wavelengt..
1. The charge flowing in a wire is plotted in the Figure below. (a) Write the expressions for q(t) as a function of time? (b) What are the corresponding expressions for i(t)?
Suppose there is a linear one-port that yields v = 10v when loaded with a resistnace RL = 100 kOhm, and i = 0.25 mA when loaded with RL = 10kOhm. Find the Thevenin and Norton equivalents of such a port.
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