Why is a tight gap better?
#1
(get your minds out of the gutter)
I'm just wondering why a tighter gap on a driver is better.
I've seen companies boast about their "ultra tight gap design" .. .but I can't seem to put together why it would be such a benefit. Especially considering the small difference in gap size between a standard driver and one with a supposed "tight" gap.
Can anyone help explain? If possible, can you give me some sort of reference to know what a wide/standard/tight gap would be?
I'm just wondering why a tighter gap on a driver is better.
I've seen companies boast about their "ultra tight gap design" .. .but I can't seem to put together why it would be such a benefit. Especially considering the small difference in gap size between a standard driver and one with a supposed "tight" gap.
Can anyone help explain? If possible, can you give me some sort of reference to know what a wide/standard/tight gap would be?
#4
You can get stronger BL with a tighter gap which can increase sensitivity and linear xmax (depending on the rest of the design)
A tighter gap can also cause the pole/magnet assembly to be more effective as a heat sink... (less distance/air inbeween the coil and the pole)
The downside to a tight gap is that the coil cannot expand from heat as much before it starts to rub or becomes siezed...
Iam sure most designers try to optimize these pros/cons...
A tighter gap can also cause the pole/magnet assembly to be more effective as a heat sink... (less distance/air inbeween the coil and the pole)
The downside to a tight gap is that the coil cannot expand from heat as much before it starts to rub or becomes siezed...
Iam sure most designers try to optimize these pros/cons...
#5
The smaller the gap, the less reluctance in the magneti circuit, so the more magnetic flux surrounds the coil, which when energized will magnetize, and react with the flux in the gap to produce the cone movement... so tighter gap means that you get more flux, more flux means more reaction, more reaction equals more movement for a given amount of current into the coil.
Thus concludes this session of linear electrical motor theory.
Thus concludes this session of linear electrical motor theory.
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Roger @ CAFz
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01-07-2012 08:11 AM