Overview
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The AL-value is one of the vital parameters when designing choke coils.
Analyzing the air gap versus the AL-value using simulations is advantageous
because the AL-value is often set by the design specifications and it varies
with the width of the air gap.
This example presents the use of a magnetic field analysis to obtain characteristics
of the air gap versus the AL-value for a choke coil. |
Characteristics of the Air Gap vs AL-value
The characteristics of the air gap versus the AL-value of the choke coil
are indicated in Fig.1.
This figure shows the relationship between the width of the gap and the
AL-value. The number of turns can be estimated by obtaining the AL-value
from the width of the gap and then calculating the specified inductance. |
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