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-2-INDUSTRIALELECTRONICSCourse NameELN 213Course NumberPHILOSOPHY/GOALS:This course will provide the student with an understanding of fundamentalcontrol and trigger devices and their industrialapplications.Emphasis ison solid-statedevices; vices and operationalamplifiers.Also, the use of programmable logiccontroller(PLC's) will be studied.METHODOF ASSESSMENT:Assessment will consist of two major theory50% of the overall grade.testsand variousPracticaltests, lab quizzes, logbook, oral and writtengeneral lab assessment will make up the other 50%.TEXTBOOK:Industrial Solid-State Electronics - Maloney.quizzes forassignments and

- 3-BLOCK sistor Switching,Tlmlng Clrcults andRelays*Text-ElectronicPrinciples,*Industrial1. Transistor as a Switch2. Transistor SwitchingCircuits3. RCTimeDelay .5.B.4-6Relay Construction,Functions and OperationsApplications of TransistorSwitches, Time-DelayCircuits and Relays inControl Circuits0.etoelectronics1. Fundamentalsof Light2. Photoelectric Devices--3.4.photovoltaiccell- photoconductor- photoemissive tubePhotoconductive Sensors- photo diode- photo transistors- photo IC'sLight - Emitters - LED's- IRED's-LASERSLCD'sNixie Tubes- Alphanumeric5. Photocouplers6. Fibre Optics7.di spl aysApplicationof OptoelectronicDevices in IndustrialControlElectronicsZbar

- 4-NUMBER T-LC.6-6REFERENCEDESCRIPTIONOperational Amplifiers1- Introduction to DifferentialAmp1ifi ers- symbol- circuit diagram- modesof operation2. OPAMPS- Construction,operation, characteristicsand specifications3. OPAMPCircuits - operation,voltage gainamp1ifi erscomparatorsinvertersand non-inverters-- adders and subtractors- integratorsentiatorsand differ-- converters(voltage/current)4. Applications of OPAMPSin ControlCircuits5. The 555 TimerD.2-3Unijunction Transistors1-Operation, Characteristics,Specifications and Ratings ofUJT's2.UJTRelazation Oscillator3.4.5.Eo10-10UJTTiming Circuits andTriggering DevicesCUJTand PUTDevicesUJT ionPNPNTrigger Devices-symbol,operation,I-V curve, characteristicsand applications(a) Schockley (Four-Layer Diode)(b) SUS(c) DIAC( d) SBS--

-5Ir[NUMBERREFERENCEDESCRIPTIONEo10-10(conti d)3.Silicon controlledRectifiers (SCR's)theory and operation- I-V anode and gatecharacteristics-- SCR gate control circuits- AC and DC Switching CircuitsSCR Applications- phase control circuits- motor-speed control- alarm and lighting systems4. Triacs theory and operationelectrical characteristicstriggering methods5. LASCR--F.4-4ProgrammableLogic Controllers(PLC's)1.-Function, Operation, Applicationand Programmingof PLC's--- ---

-6BLOCK"A"The student- TransistorshallSwitching, Timing Circuits and Relaysbe able to:1.Explain the operation of a transistorlinear transistor amplifier.switch and how it differs2.Calculate resistor3.Explain the advantages of some commonvariationstransistor switch.4.Define the term "time constant" as related to RC and RLcircuits.5.Use the Universal Time Constant Chart in determining the effects oncircuit voltage and current with respect to time.6.Becomefamiliar with some applications7.Define the term "rel ay"8.Describe the basic construction of a simple d.c. relay with the aid ofsizes for a transistorfrom aswitch.of the basicof timing circuitsin industry.a schematic diagram.9.Explain the effects(a)(b)(c)(d)10.on relay operationwhen:spring tension is varieddistance between contact points is variedusing differentsizes of coil windings and differentmateri alsupply voltage to coil windings is variedDefine the followingterms associated(a)(b)(c)(d)Make or Break (NO, NC)Energized, de-energized"pick-up" value, "reset"Relay coil resistance(e)SPST,coil corewith relays:valueSODT, DPDT--------

-7 11.State the characteristics,main types of relays:advantages and disadvantages of the threeElectromagnetic relays-- ReedrelaysSolid stateswitches12.Explain (with the aid of circuit diagrams) the operation of variouselectro-magnetic relays, time-delay relays (vacuum tube andtransistor).13.Explain the function and circuitfollowing applications:- circuitkeyingoperation of the relay in theoverload and underload protectionremote switchingindustrial controlstiming circuitstime-delay relay circuits(electronicand non-electronic).14. Use manufacturer's specification manuals and data sheets in order toselect the proper relay for the required job.15. Explain the operation, advantages and disadvantages of solid-staterelays.--

-8BLOCK"B"Thestudent- OPTOELECTRONICSshallbe able to:1.Recall the characteristic2.Recall how light3.Recall the relationship between frequency, wavelength and speed oflight and the units of measurementfor each.4.Understand the spectral response of the humaneye to various colours.5.Recall how light6.List the three main types of photoelectric (PE) devices, draw thesymbol diagram and state the principle characteristicof each.7.With the aid of a Resistance vs Illumination curve for a typicalphoto-conductive cell, to state the affect on cell resistance forvarious light intensity.8.Calculate the circuitlight.9.Draw the symbol diagram, explain the operation and state thecharacteristics,specifications,ratings and application of thefollowing various frequencies affects tocouplers(e)Solid-Statedevices.current and voltage when a cell is subjected toDevices:(i)(i i)(iii) related to the electromagnetic spectrum.(a)(c)of optoelectric(iii)PhotodiodePhototransistor,FET, DarlingtonPhoto IC(i)(i i)(iii)(iv)(v)(vi)LED'sI REDI sLCD'sLASERSNixie TubeAlphanumerical(i)(i i)(Optocouplers)Relays- --PhotovoltaiccellPhotoconductive cellPhotoemissive tubedisplays

-- OperationalBLOCK"C"The student1.shall-9Amplifiers (OPANPS)be able to:Draw a block diagram of a basic differentialcharacteristics.2.With the aid of a basic circuitexplain circuit operation.3.Explain the operation and characteristicsamplifier -of-phaseamplifier and state itsdiagram of a differentialinputinput (differentialsignals.amplifier,of the following differentialinput) with in-phaseandDraw a block diagram of an OPAMPand state the approximate values ofeach important amplifier characteristictypical of an OPAMP,such as:(a)(b)(c)(d)(e)Power ratingOpen-loop voltage gainDifferentialvoltage gainInput and output impedanceCommon-moderejection ratio(CMRR)5.Describe the offset problem of OPAMPSand show how it can be6.Explain the concept of "virtual7.For the following f)(g)(h)(i )(j)(k)recallground".draw the circuitdiagram, explain itsthe voltage gain formula and listits characteristics.Constant-gain amplifierInverting AmplifierCon-inverting AmplifierEmitter-followerComparatorAdder iatorVoltage-to-currentconverter8.To extract9.To study the operation, characteristicsTimer I.C.electricaldata on plicationson OPAMPSfrom manufacturers data sheets.----and applications--andof the 555--

- 10 BLOCK"D"- UnijunctionTransistor(UJT)The student shall be able to:1. Draw the symbol and structural diagram of a UJT and explain how itoperates.2.Interpret the I-V characteristicscurve of a UJT and identify the peakvoltage, peak current, valley voltage, valley current, saturationvoltage, and negative resistance region.3.Relate the UJT variables of peak voltage (Vp), intrinsic(1), interbase resistance (RB6) and voltage (VBB), andcalculate anyone of these, glven the other two.4.With the aid of a circuit diagram and waveforms, explain the operationof a UJT relaxation oscillator and properly size the timing resistorsand capacitors in these circuits and calculate the frequency ofoscillation.5.Explain the problem of UJT latch-up,it.6.State the characteristics,operation, application of a programmableUJT(PUT) and draw its fully labelled circuit diagram.7.State the characteristics,stand of ratiowhy it occurs, and howto avoidoperation, applicationof a 555 Timer.----

.-BLOCK"E"- PNPN(Thyristor)DevicesThe student shall be able to:1. Recall that the term "thyri stor" refers to all membersof the PNPNfamily that have a control mechanism.2. For the following PNPNtrigger devices, draw the symboldiagram,explain operation, draw the I-V characteristicmain characteristics:(a)( b)(c)(d)PNPN(Schockley)SUSDiacSBScurve, and state theDiode3.Draw the symbol diagram, structural diagram, and the I-V characteristiccurve for the SCR, indicating the "off" region, "on" region, forwardbreakover voltage, holding current and voltage and gate triggercurrent and voltage.4.Explain the operation of an SCRpower control circuit for controllingresistive loads with AC/DCsupplies and various gate triggeringmethods.5.Explain the operation of an SCR.6.Define firing delay angle and conduction angle and show howthey affectthe load current.7.Define some of the important electrical parameters associated withSCR's, such as gate trigger current and voltage, holding current,forward ON-state voltage, forward breakover voltage, maximumpowerdissipation, etc., and give the approximate range of values expected for these parameters using data sheets and specification manuals.8.Explain the operation and advantages of breakover trigger devices usedwith SCR's.9.With the aid of circuit diagrams and waveforms, explain the principlesof phase shift control using an ACsupply voltage and a gate pulsevoltage.State howthe firing angle causes the conduction angle tovary.10.For the following thyristorcontrol devices, draw the symbol diagram,explain operation, state turn-on and turn-off methods, draw the I-Vcharacteristicsand applicationsof:--

- 12 10.continued(a)(b)(c )( d)11.TRIACLASCRGCSSCSExplain circuitoperation, functionindustrialcontrol ciritsusing allcourse.---of components, etc. for variousthe devices covered in this-.

photoemissive tube 3. Photoconductive Sensors--photo diode-photo transistors photo IC's 4. Light-Emitters--LED's-IRED's-LASERS-LCD's-Nixie Tubes Alphanumeric di spl ays 5. Photocouplers 6. Fibre Optics 7. Application of Optoelectronic Devices in Industrial Control - 4 ---- --NUMBER T-L DESCRIPTION REFERENCE C. 6-6 Operational Amplifiers 1 .

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