Intro to Electronics
Activity 3.0
Understanding Electricity
What is ELECTRICITY?
Understanding Electricity
What is ELECTRICITY?
The flow of tiny particles, called electrons, through a conductor
Insulators
Conductors
vs
materials that allow electricity to flow easily
ex. copper, aluminum
materials that block the flow of electricity
ex. plastic, rubber
Building Blocks of Electronics
Path
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Building Blocks of Electronics
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The "starting point" or "power station" in a circuit.
They are the place where energy is introduced in the circuit.
Power sources can be storage units like batteries or even plugs like wall outlets or USB outlets.
Building Blocks of Electronics
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The "highway" or "route" electricity travels on.
The channel energy flows.
The path is made using conductive materials like copper wires to connect various components together.
Building Blocks of Electronics
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The "receiver" of electricity or "gadget" in a circuit.
The thing that needs electricity to function like light bulbs, motors, and other output tools.
Building Blocks of Electronics
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Examples of Output Devices:
- LEDs (Light Emitting Diodes): They emit light when current passes through them and are commonly used as indicators in electronic devices.
- Electric Motors: loads that convert electrical energy into mechanical energy, making things move. ex. Servo Motors, Stepper Motors, etc.
- Speakers: loads that convert electrical signals into sound waves, allowing us to hear music, movie dialogues, and other audio
- Heating Elements: loads that convert electrical energy to heat
Building Blocks of Electronics...
Devices or gadgets that return instructions and information to a computer or processor (aka the brain of the circuit).
- Buttons
- Switches
- Joysticks
- Knobs
- Touchscreens
- Microphones
- Sensors
- Cameras
Input Devices
Current
Voltage
vs
the pressure or force that pushes electrons through a circuit
measured in
volts (V)
the amount of electron flow in a circuit
measured in
amperes or amps (A)
Building Blocks of Electronics
- Resistors: They limit the flow of electricity and help control the current in a circuit.
Building Blocks of Electronics
- Capacitors: They store and release electrical energy.
Examples of Electronics?
Ground
Ground : provides a conductive path for excess electricity to escape the circuit
or
on Arduinos ground closes the circuit (i.e. neutral)
Examples of Electronics?
Safety in Electronics
Beware of:
- Exposed Wires
- Damaged Components
- Liquids