MFG*142: Electronic Circuits & Devices Course Syllabus

COURSE DESCRIPTION Electronic circuits and devices are common place in the industrial manufacturing process; consequently, a complete understanding of control circuits and devices is necessary for anyone who intends to have a career in manufacturing control, maintenance, or engineering. Electronic Circuits & Devices provides an introduction to electronic materials, components, circuits, devices and their applications. The course will provide an overview of semiconductors, diodes, transistors (bi-polar, field-effect and unijunction), applications of SCR and Triac to circuits, and application of components to rectifiers, amplifiers, and relays. GENERAL COURSE GOALS

q Demonstrate an understanding of the construction of semiconductor devices and the material from which they are constructed.

q Demonstrate an understanding of the significance of heat to semiconductors and the devices and materials used to address this issue.

q Demonstrate an understanding of basic diode operation and testing. q Demonstrate the use of the diode in a variety of rectifier applications. q Apply the filtering process to a variety of rectifiers. q Select and apply bi-polar transistors to amplifier applications. q Select and apply Field Effect Transistors to amplifier applications. q Apply unijunction transistor to timing applications. q Utilize the silicon-controlled rectifier (SCR) in AC and DC circuits. q Apply phase shifting circuitry to the SCR. q Select and apply the Triac to AC circuits including phase shifting. q Select and apply solid state relays. q Explore oscillator applications. q Utilize off-delay and on-delay solid state timers. q Select and utilize various operational amplifiers. REQUIRED TEXT and MATERIALS Electronics for Industrial Electricians, 3rd ed., Stephen L. Herman, Delmar Publishers, Inc. Materials: Calculator capable of scientific notation, departmental required hand tools. Prerequisites: Technical Math, Circuit Theory I & II, Digital Fundamentals, Electricity & Electronics Fundamentals Teaching Methodology: lecture & demonstration that incorporates multimedia. Grading System: Course grading will be in adherence to Asnuntuck Community College grading policy. Textbook:

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WEEKLY ASSIGNMENTS Week 1 2 3 4 5 6 7 8 9 10

Unit 2 3 4&5 6&7 8 10 – 13 14

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23 – 26

12 13 14

27 28 30 – 36

15 16

38 - 40

16 17 – 21

Title Semiconductors Power Rating and Heat Sinking Components The P-N Junction; The Light Emitting Diode Single Phase Rectifiers; The Polyphase Rectifier Filters The Transistor; The Transistor Switch; The Transistor Amplifier; The Darlington Amplifier Field Effect Transistors Mid-term Exam The Unijunction Transistor The SCR in a DC Circuit; The SCR in an AC Circuit; Phase Shifting an SCR; SCR Control of a Full Wave Rectifier The Diac and Silicon Bilateral Switch; The Triac; Phase Shifting the Triac; Other Methods of AC Voltage Control The Solid State Relay The Oscillator The Off-delay Timer; The On-delay Timer; The Pulse Timer; The 555 Timer; The 555 Used as an Oscillator; The 555 On-delay Timer; The 555 Pulse Timer The Operational Amplifier; The 741 Op Amp Level Detector; The 741 as an Oscillator Final Exam Learning Objectives

Unit 2:

Semiconductors

Goal:

Demonstrate an understanding of the construction of semiconductor devices and the material from which they are constructed.

Objectives

q Discuss the differences between the atomic structure of conductors, insulators, and semiconductors. q Give an explanation of how p- and n-type materials are made. q Describe a lattice structure. q List the two common materials used for semiconductor construction. q Describe the process known as hole flow. Unit 3:

Power Rating and Heat Sinking Components

Goal:

Demonstrate an understanding of the significance of heat to semiconductors and the devices and materials used to address this issue.

Objectives:

q Discuss why heat sinks are necessary in electronic circuits. q Discuss the use of thermal compound. q Explain how thermal compound aids in the transfer of heat from the electronic component to the heat sink. 2

Learning Objectives (Cont’d) Units 4 & 5:

The P-N Junction; The Light Emitting Diode

Goal:

Demonstrate an understanding of basic diode operation and testing.

Objectives:

q Demonstrate an understanding of light-emitting diodes (LEDs). q Discuss the operation of a diode. q Explain forward and reverse bias. q Draw the schematic symbol of a diode and label its elements. q Test a variety of diodes with an ohmmeter. q Discuss the operation of a light-emitting diode (LED). q Compute the resistance needed for connecting an LED into a circuit. q Connect an LED in a circuit. q Discuss the differences between light-emitting diodes and photodiodes. q Draw the schematic symbols for LED and photodiodes. Units 6 & 7

Single Phase Rectifiers; The Polyphase Rectifier

Goal:

Demonstrate the use of the diode in a variety of rectifier applications.

Objectives:

q Discuss the operation of single-phase rectifiers. q Construct a half-wave rectifier. q Connect a two diode type of single-phase rectifier using discrete electronic components. q Connect a bridge rectifier using discrete electronic components. q Compute the output voltage for different types of rectifiers. q Discuss the operation of a three-phase rectifier. q Compute the average DC output voltage of a half wave, three phase rectifier. q Compute the average DC voltage of a full wave, three-phase rectifier. q Connect a half wave, three phase rectifier using discrete components. q Connect a full wave, three-phase rectifier using discrete components.

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Learning Objectives (Cont’d) Unit 8:

Filters

Goal:

Apply the filtering process to a variety of rectifiers.

Objectives:

q Discuss the operation of filters in an electronic circuit. q Discuss the differences between capacitive and inductive filters. q Connect a capacitive filter into a circuit. q Connect an inductive filter into a circuit. Unit 10 – 13:

The Transistor; The Transistor Switch; The Transistor Amplifier; The Darlington Amplifier

Goal:

Select and apply bi-polar transistors to amplifier applications.

Objectives:

q Discuss the operation of a transistor. q Name the two types of transistors. q Find the parameters of a transistor in a semiconductor catalog. q Test a transistor with an ohmmeter. q Connect a transistor into an electronic circuit. q Discuss the polarity connections for different types of transistors. q Draw transistor symbols for both NPN and PNP type transistors. q Discuss the use of transistors in a switching application. q Connect a transistor into a circuit and use it in a switching application. q Make measurements of transistor voltage drops using test instruments. q Discuss amplification of electronic signals. q Bias a transistor for use as an amplifier. q Construct a transistor amplifier from discrete components. q Discuss the operation of a Darlington amplifier. q Compute the gain of a Darlington amplifier circuit. q Construct a Darlington amplifier using discrete components.

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Learning Objectives (Cont’d) Unit 14:

Field Effect Transistors

Goal:

Select and apply Field Effect Transistors to amplifier applications.

Objectives:

q Discuss different types of field effect transistors. q Discuss the differences between DE-MOSFETs and E-MOSFETs and JFETs. q Compare the operation of junction transistors and field effect transistors. q Connect a field effect transistor circuit. Unit 16:

The Unijunction Transistor

Goal:

Apply unijunction transistor to timing applications.

Objectives:

q Discuss the operation of a unijuntion transistor. q Describe the differences between a unijunction transistor and a junction transistor. q Test a unijunction transistor with an ohmmeter. q Connect a unijunction transistor in a circuit. Units 17 – 21:

The SCR in a DC Circuit; The SCR in an AC Circuit; Phase Shifting an SCR; SCR Control of a Full Wave Rectifier

Goals:

A) Utilize the silicon controlled rectifier (SCR) in AC and DC circuits. B) Apply phase shifting circuitry to the SCR. Objectives: q Discuss the operation of an SCR when connected to a DC circuit.

q q q q q q q q q q q

Draw the schematic symbol for an SCR. Test an SCR with an ohmmeter. Connect an SCR in a DC Circuit. Discuss the operation of an SCR in an AC circuit. Discuss problems of controlling an SCR in an AC circuit. Connect an SCR in an AC circuit. Discuss the meaning of phase shifting an SCR. Discuss the reasons for phase shifting an SCR. Construct a circuit for phase shifting an SCR in an AC circuit. Discuss the use of a UJT as a phase shifting device for an SCR. Discuss the operation of a Shockley diode.

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Learning Objectives (Cont’d) Units 17 – 21 cont’d:

q q q q q q q q

The SCR in a DC Circuit; The SCR in an AC Circuit; Phase Shifting an SCR; SCR Control of a Full Wave Rectifier

Draw the schematic symbol of a Shockley diode. Discuss the use of a Shockley diode as a phase shifting device for an SCR. Discuss the characteristics of a silicon unilateral switch. Draw the schematic symbol of a SUS. Construct a phase shift circuit for an SCR using a UJT. Discuss how SCRs can be used to control the DC output voltage of a full wave rectifier. Explain why only two SCRs are needed to control a bridge rectifier. Connect a full wave rectifier circuit controlled by SCRs.

Units 23 – 26:

The Diac and Silicon Bilateral Switch; The Triac; Phase Shifting the Triac; Other Methods of AC Voltage Control

Goal:

Select and apply the Triac to AC circuits including phase shifting.

Objectives:

q Discuss the operation of a diac. q Draw the schematic symbols of a diac. q Discuss the operation of a silicon bilateral switch. q Draw the schematic symbol of a SBS. q Connect a diac in an electronic circuit. q Discuss the operation of a triac. q Draw the schematic symbol of a triac. q Test a triac with an ohmmeter. q Connect a triac into a circuit. q Discuss phase shift control for a triac. q Construct a triac circuit using discrete components. q Make electrical measurements using test equipment. q Discuss different methods of controlling an AC voltage. q Construct a circuit for controlling AC voltage using a bridge rectifier and an SCR circuit. q Construct a circuit for controlling AC voltage using a transistor and a bridge rectifier.

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Learning Objectives (Cont’d) Unit 27:

The Solid State Relay

Goal:

Select and apply solid state relays.

Objectives:

q Discuss the operation of a solid state relay. q Discuss different methods used to isolate the control section of the relay from the power section. q Connect a solid state relay in an electrical circuit. q Discuss different uses and applications for solid state relays. Unit 28:

The Oscillator

Goal:

Explore oscillator applications.

Objectives:

q Discuss the operation of an oscillator. q Discuss different uses for the oscillator. q Construct a square wave oscillator using discrete electronic components. Unit 30 – 36:

The Off-delay Timer; The On-delay Timer; The Pulse Timer; The 555 Timer; The 555 Used as an Oscillator; The 555 On-delay Timer; The 555 Pulse Timer

Goal:

Demonstrate an understanding of various timers.

Objectives:

q Describe the operation of an off-delay timer. q Draw the schematic symbol for an off-delay timer contact. q Construct an off-delay timer circuit using discrete electronic components. q Discuss the operation of an on-delay timer. q Draw the schematic symbol for an on-delay timer contact. q Construct an on-delay timer using discrete electronic components. q Discuss the operation of a pulse timer. q Construct a pulse timer using discrete electronic components. q Discuss the operation of a 555 timer. q List the pins on the timer and give an explanation of what each does. q Connect the 555 timer in an electronic circuit. q Discuss the operation of a 555 timer when it is used as an oscillator. q Connect a 555 timer as an oscillator.

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Learning Objectives (Cont’d) Unit 30 – 36 cont’d:

The Off-delay Timer; The On-delay Timer; The Pulse Timer; The 555 Timer; The 555 Used as an Oscillator; The 555 On-delay Timer; The 555 Pulse Timer

q Make measurements of frequency using an oscillascope. q Describe the operating characteristics of a on-delay timer. q Discuss the operation of a stealer transistor. q Construct a circuit using the 555 timer as an on-delay timer. q Describe the operation of a pulse timer. q Discuss the operation of a blocking diode. q Construct a pulse timer using a 555 timer. Units 38 – 40:

The Operational Amplifier; The 741 Op Amp Level Detector; The 741 as an Oscillator

Goal:

Select and utilize various operational amplifiers.

Objectives:

q Discuss the operation of an operational amplifier. q Discuss inverting inputs and noninverting inputs. q Describe specific parameters for the 741 operational amplifier. q Discuss the operation of the offset null. q Discuss negative feedback and calculate the gain of the operational amplifier. q Connect an operational amplifier. q Describe the operation of a level detector. q Connect an operational amplifier as a noninverting level detector. q Connect an operational amplifier as an inverting level detector. q Discuss the operation of an oscillator. q Describe the difference between an oscillator and a pulse generator. q Construct an oscillator using a 741 operational amplifier. q Construct a pulse generator using a 741 operational amplifier.

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