Robert Cinca - Physics
Methodology
Methodology
This section is split into the following three categories:
This section is split into the following three categories:
Part 1: Logical Argument: finding out the functionality of the relationship
Part 1: Logical Argument: finding out the functionality of the relationship
between the final current and the surge current time.
between the final current and the surge current time.
Part 2: Testing the Filament Bulb: this section covers all the experiments done
Part 2: Testing the Filament Bulb: this section covers all the experiments done
on measuring the surge current time.
on measuring the surge current time.
Part 3: Excel Modeling and Finding out the Properties of the Filament Bulbs:
Part 3: Excel Modeling and Finding out the Properties of the Filament Bulbs:
the specific properties of my two different bulbs (6.5V 0.15A and 6.5V 0.30A)
the specific properties of my two different bulbs (6.5V 0.15A and 6.5V 0.30A)
are analyzed using a microscope and then used to model the rise in
are analyzed using a microscope and then used to model the rise in
temperature inside the filament treating it as a hot body radiator.
temperature inside the filament treating it as a hot body radiator.
Terminology
Terminology Clarification
Clarification
Before explaining all my experimental results and excel model, I would quickly like to
Before explaining all my experimental results and excel model, I would quickly like to
clarify some terms:
clarify some terms:
The surge current time: the time interval between switching the bulb on and
The surge current time: the time interval between switching the bulb on and
when the final steady current is first reached.
when the final steady current is first reached.
The maximum surge current: this is the size of the current at its maximum
The maximum surge current: this is the size of the current at its maximum
point.
point.
The time taken to reach the maximum surge current: this is the time taken as
The time taken to reach the maximum surge current: this is the time taken as
measured from when the filament bulb is switched on to when the maximum
measured from when the filament bulb is switched on to when the maximum
surge current is recorded.
surge current is recorded.
There are three different conclusions which I have drawn from my experiments:
There are three different conclusions which I have drawn from my experiments:
The relationship between surge current time and final current (primary).
The relationship between surge current time and final current (primary).
The size of the maximum surge current in relation with the size of the final
The size of the maximum surge current in relation with the size of the final
current (secondary).
current (secondary).
The time taken to reach the maximum surge current (tertiary).
The time taken to reach the maximum surge current (tertiary).
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