03. Basic Electronics.pptx
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Transcript of 03. Basic Electronics.pptx
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Basic Electronics
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Basic Developmental tools
Breadboard
Multimeter
PCB/ECB
Solder Iron
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Breadboard
This is the base for setting up the circuit.
Consists of metal strips forming a grid of connections inside its body
Allows us to take multiple connections from a single point without any need of soldering/disordering as in PCB/ECB
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What is a ROBOT?
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Breadboard
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Breadboard
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Breadboard
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Multimeter
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PCB/ECB
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PCB/ECB
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Soldering Iron
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Basic Electronic Components
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Basic Electronic Components
Resistors
Capacitor
Diode
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Types
Fixed carbon Rheostat
Fixed wire-wound LDRs
Potentiometer Thermistors
Resistors
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How voltage depends on the intensity of light?
What is the material of the track made on the LDR?
LDR
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A resistor may have one or more fixed tapping points so that the resistance can be changed by moving the connecting wires to different terminals.
Variable Resistors
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Rheostat/Potentiometer
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Capacitors/Condenser
Device for storing electric charge
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Types of Capacitors
Electronic Capacitor: Have specific polarity
Ceramic Capacitor: Don’t have fixed polarity
7µF 16v
Cathode Anode
C = 15x10^4 pF
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Diodes
It is a two-terminal electronic component that conducts electric current in only one direction.
Biasing-It is a method of establishing predetermined voltages and/or current at various points of an electronic circuit to set an appropriate operating point
Thin bar depicts the cathode
Rating- 1000v/1.5A
Si diodeGe diode
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Application
Rectification :Rectifiers are constructed from diodes, where they are used to convert alternating current (AC) electricity into direct current (DC).
Over voltage protection
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Zener Diode
Used as a voltage regulator
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LED (Light Emitting Diodes)
Emits light in forward bias.
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LED (Light Emitting Diodes)
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LED
Low Power Device
• Current should be less than 20 mA• 220 ohm resistance connected in series with LED
Used to display the outputs at various stages of the circuit
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Switches
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What is a SWITCH?
Binary device which interrupts the flow of electrons in a circuit by any physical or chemical process
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Poles & Throws
•No. of contacts/leversPole
•No. of contact positions/ways/switching positions
Throw
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Relay: Electrically Operated Switch
Solenoid is used to actuate a set of switch contacts
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Relay
Controls a large amount of current and/or voltage with small electrical signal
Acts as binary amplifier (controls one electrical signal with other)
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SPDT Relay
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