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The LED component
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Understanding the LED's power
Current is measured in Amperes, which is the flow of electric charges at the rate of one coulomb per second
Voltage is the difference in energy from one spot to another
The most popular analogy for power relation
Maximum current of 30mA
If the resistance is increased then the current, surface temperature, voltage, lifespan, and brightness will fluctuate according to Ohm's law
So how accurate is Ohms Law an how does it affect visual aspects of an LED?
Voltage
Ohms Voltage(V)
0 0
100 0
1000 6.4
2000 6.4
5000 6.4
10000 6.3
20000 6.4
50000 6.4
How about current?
Ohms Current(mA) Estimated
0 0 inf.
100 0 inf.
1000 5.8 6.2
2000 1.9 3.1
5000 1.3 1.2
10000 0.6 0.62
20000 0.2 0.3
50000 0.18 0.12
When I increase the resistance how does that affect the brightness?
Ohms Brightness(K)
0 8.7
100 4.6
1000 2.9
2000 1.8
5000 1.5
10000 1.5
20000 1
50000 0.9
Surface temperature and life span
Ohms Surface temp(c) Life span(sec)
0 43.8 2
100 38.3 3
1000 21.6 inf.
2000 22.2 inf.
5000 22.7 inf.
10000 22.2 inf.
20000 22.2 inf.
50000 22.2 inf.
This research shows how Ohm’s law plays a contributing factor on any electrical circuit. Changing the resistances shows how the LED is affected by the change in inputs.
When the resistance increased the following occurs:
The current and brightness are decreased
The lifespan increased
The surface temperature and voltage remained constant
The LED Component
Georg Ohm
By: Aidan Curtis
(resistor circuit symbol)
Resistance is the inverse property of electrical conductance. It is measured in Ohm's and is implemented by a resistor
Data
An LED is an electrical component that is used in everyday life. It is found in cars, stoplights, flashlights, and many televisions.
Think as electrical power as water
Current is the amount of buckets that pass through this line in a second
and resistance stops the buckets from getting past/electrical flow
+9V
Ohm's Law
Voltage is how full the bucket is
9V
5V
3V
Hypothesis and Conclusion
Background