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Essmart Hackathon
Peter Burkimsher and Sreechand Tavva
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What to expect
• A basic introduction to electricity• How to read a circuit diagram• Common electrical components• Series and parallel circuits• What not to do• Advice for best practice• Build your own multi-brightness LED!
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Electricity - 1
V+ GND
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Electricity - 2
V+ GND
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Electricity - 3
V+ GND
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Voltage - 1
5 V
V+ GND
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Voltage - 2
2.5 V
V+ GND
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Voltage - 3
0 V
V+ GND
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Current - 1
0.001 AV+ GND
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Current - 2
1 mAV+ GND
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Current - 3
500 mAV+ GND
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Shorting out
500 mA
5 V
V+ GND
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Circuits
500 mA
5 V
V+ GND
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Resistor
20 mA
5 V
V+ GND
4.7 kΩ100 Ω
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Diode
5 V
V+ GND
V+ GND
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Diode warning
500 mA
5 V
V+ GND
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LED
5 V
V+ GND
V+ GND
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Practical 1 – Series LED
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Practical 2 - Switch
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Switches
0 mA
5 V
V+ GND
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Practical 3 – Series Resistors
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Practical 4 – Parallel Resistors
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Variable Resistor
5 V
V+ GND
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Practical 5 – Variable Resistor
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Practical 6 – Parallel switch
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Thank you for your participation!
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Practical 8 – Everything
• Let’s use everything we learned to build a full circuit with all the features we want!
• The switch activates maximum brightness• The variable resistor controls brightness
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Practical 5 – Voltage Divider
• A voltage divider places the LED in parallel with the second resistor.
• This should be half as bright as when the LED was in series with only the 100Ω resistor.
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Changeover Switch
• Changeover switches let you choose 2 inputs.• If one pipe is empty, a changeover switch is
the same as a normal on/off switch. • Our switches have 3 connectors for this. – We will leave one disconnected.
• Electronic symbol:
0 mA
5 V
V+ GND