basics electronics engineering ppt
TRANSCRIPT
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ELECTRICAL& ELECTRONICS ENGINEERING.
BY:-Prince Kumar.04/19/15 BRCM CET 1
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ENGINEERING??
The Engineering Council says:“engineering is the practice of creating and
sustaining services, systems, devices, machines, structures, processes and products to improve the quality of life; getting things done more effectively and efficiently”
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04/19/15 BRCM CET
Electronic Components
Electronics Unit, Lecture 2
Identification of components and handling precautions to protect them from damage due to electrostatic discharge
3
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Passive Components
Resistors
Capacitors
Inductors
Diodes
Interface components
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Resistors
Values specified in ohms (Ω), kilo-ohms (K), or mega-ohms (M)
Marked with value using a color code
0 1 2 3 4 5 6 7 8 9 5% 10%Big Bears Run Over Your Gladiola Bed Vexing Garden Worms (go see now)
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Resistor ratingsPhysical size of resistors determines power handling ability
Commonly available as 1/8, 1/4, 1/2, 1,and 2 watt components
Much higher powers available , usually as wirewound or ceramic encapsulated parts
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Capacitors
Values specified in microfarads (μF) or picofarads (pF)
Marked with actual value or a numeric code
Some varieties are +/- polarized
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Capacitor types
Ceramic diskMonolithic ceramicDipped silvered-micaMylar or polyesterAluminum electrolytic (+/-)Tantalum (+/-)
Ceramic disk Monolithic ceramic Dipped siver-mica Mylar Mylar
Solid tantalum, polarized Radial aluminum electrolytic Axial aluminum electrolytic
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Inductors
Values specified in henries (H), millihenries (mH) and microhenries (μH)
A coil of wire that may be wound on a core of air or other non-magnetic material, or on a magnetic core such as iron powder or ferrite.
Two coils magnetically coupled form a transformer.
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Inductor types
Molded inductor & air-wound inductor Adjustable air-wound inductor
Ferrite core toroidal transformer Iron powder toroidal inductorAir wound inductor
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DiodesMost modern diodes are semiconductor devices, but are considered passive since they do not contribute any amplification or gain to a circuit.
Cathode Anode
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Diode typesMay be classified by semiconductor material
silicon, germanium, gallium arsenide, etc.
Or classified by circuit function
Small signal detector or switching diode
Light-emitting diode (LED)
Rectifier diode
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Active ComponentsTransistors
BipolarField effect
Integrated circuitsAnalogDigitalMicrocontroller
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Transistors
Three terminal devices manufactured in a variety of package styles. Can you find the three terminals of this, the very first transistor?
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Terminal Designations and packaging styles
GateSource
Drain
Emitter
Collector
Base
2N2222 in a TO-92 package
2N2222A in a TO-18 package
2SC2078 in a TO-220 package
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Integrated CircuitsIntegrated circuits (ICs) are multi-terminal devices that provide an array of functions and applications far to numerous to list here.
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Pin identification and numbering convention
Pins are numbered sequentially in a counterclockwise direction.
Pin 1 is often identified with a dot or a dimple.
The pin 1 end of the chip is often identified with a notch.
Notch
Dimple
Pin 1Pin 7
Pin 8Pin 14
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Operational Amplfier
Operational Amplifiers take small voltages and make them MUCH larger.
Golden Rules (Op amp with negative feedback): (1) No-current flows into either (+) or (-) inputs.(2) The (+) and (-) inputs are at the same voltage.
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TransducerA transducer is a device or structure that transforms a physical quantity into an electrical one or a device / structure that transforms an electrical quantity into a physical one.
For example: A microphone transforms changes in sound pressure level into changes in voltage.
A condenser microphone is one in which a moving diaphragmalters the distance between two metal plates. This results ina proportional change in the capacitance of the plates.
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Marvels of Electrical Engineering
Power Grid – Providing Electricity to entire city
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Marvels of Electrical Engineering
Space ShuttleControl Room of Dam
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Discipline – Electrical Engineering
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Scopes of Electrical Engineering
Electrical engineering is one of the core fields of engineering, so it is always evergreen in terms of Scope and Job Prospects. Electrical Engineering is the heart of whole engineering discipline and therefore it scope will never fade even many years from now.
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C Electrical Engineering24
Career Options for Electrical Engineer
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B. EngineeringCareer Options: Field Jobs
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LABSElectronic Labs:
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Companies employing our Electrical Graduates
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Dept. EEE Eng.• Student Testimonial
• …… I got employment within 2 months of leaving this programme. I work for a company who provides solutions for new/traditional energy generation and distribution both here and abroad. It is an excellent career for any graduate and there is great demand for their services…..
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THANK YOU…
• BRCM COLLEGE OF ENGINEERING & TECHNOLOGY BAHAL ,BHIWANI (HARYANA).
• Email:[email protected]
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