What are the characteristics of bobbin inductors?
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Definition and Characteristics:
Definition: An I-shaped inductor is an electromagnetic component made of an I-shaped magnetic core and enameled copper wire.
Characteristics:
? - Small size and easy installation.
? - Belongs to the category of through-hole inductors, occupying minimal space.
? - High Q factor, low distributed capacitance, and high self-resonant frequency.
? - Special pin structure that makes it less likely to form a closed loop.
Performance Advantages:
- Wide inductance range (0.5 μH to 150 mH), with stable inductance values.
- Capable of achieving high inductance, suitable for step-up or step-down applications.
- Commonly used in power circuits for filtering, signal quality control, and general connections in switch-mode power supplies.
Applications:
- Widely used in power circuits as chokes to prevent harmonic distortion from polluting the grid and to protect power supplies from grid harmonics.
- Commonly found in devices such as alarms, buzzers, and atomizers.
- Three-terminal surface mount bobbin inductors, due to their limited winding space, are not suitable for high inductance applications and therefore cannot replace traditional three-terminal bobbin inductors in certain scenarios.