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A series-parallel combination of inductors is a circuit arrangement where inductors are connected in both series and parallel configurations. This allows for a more complex inductor network that can have different characteristics than a single inductor.
In a series connection, inductors are connected end-to-end, meaning the current flowing through one inductor also flows through the other. In a parallel connection, inductors are connected side-by-side, meaning the voltage across each inductor is the same.
The inductance of a series-parallel combination is affected by the individual inductances and the arrangement of the inductors. In a series connection, the total inductance is equal to the sum of the individual inductances. In a parallel connection, the total inductance is less than the smallest individual inductance.
A series-parallel combination allows for more flexibility in designing circuits with specific inductance values. It also allows for the creation of more complex inductor networks that can have different characteristics than a single inductor.
To calculate the total inductance, you must first determine the arrangement of the inductors (series or parallel). For a series connection, simply add the individual inductances. For a parallel connection, use the formula 1/L(total) = 1/L1 + 1/L2 + 1/L3... where L1, L2, L3, etc. are the individual inductances. Then, take the reciprocal of the result to get the total inductance.