Noise suppression inductor
First Claim
1. In a noise suppression inductor including a bobbin having a spool divided into a plurality of spool portions, a core mounted on said bobbin, at least one coil on said spool portions having a plurality of coil portions and a plurality of terminal pins connected to opposite ends of said coil, the improvement comprising:
- at least one of said coil portions having no more than two winding layers the second of which is incomplete and having a first self-resonant frequency in the frequency range of noise to be suppressed;
at least another one of said coil portions having not less than two winding layers and having a second self-resonant frequency in the frequency range of noise to be suppressed and which is different from said first self-resonant frequency.
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Accused Products
Abstract
A noise suppression inductor including a bobbin having a spool divided into a plurality of spool portions, a core mounted on the bobbin, at least one coil wound around the spool portions into a plurality of coil portions and a plurality of terminal pins connected to opposite ends of the coil, in which at least one of the coil portions is composed of a first part having one or two winding layers and a second part having one winding layer and at least another one of the coil portions has not less than two winding layers.
32 Citations
12 Claims
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1. In a noise suppression inductor including a bobbin having a spool divided into a plurality of spool portions, a core mounted on said bobbin, at least one coil on said spool portions having a plurality of coil portions and a plurality of terminal pins connected to opposite ends of said coil, the improvement comprising:
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at least one of said coil portions having no more than two winding layers the second of which is incomplete and having a first self-resonant frequency in the frequency range of noise to be suppressed; at least another one of said coil portions having not less than two winding layers and having a second self-resonant frequency in the frequency range of noise to be suppressed and which is different from said first self-resonant frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification