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部品型式

AB3X2X3SM

製品説明
仕様・特性

2. Noise Suppression Devices AMOBEADS An amorphous noise suppression device is unique and completely different from conventional noise filters. Conventional noise prevention products focus on somehow minimizing the noise after it's been created, by typically trying to absorb the noise, and so their effectiveness in noise reduction is directly influenced by frequency of the circuit. Amorphous noise suppressing devices, on the other hand, focus on the source of the noise and work to prevent or minimize the noise before it has a chance to develop. The source of the electronic circuit noise is the rapid change of current or voltage, and the effectiveness of the amorphous cores in eliminating this noise is independent of frequency. An amorphous noise suppression device is a product that takes full advantage of the unique magnetic characteristics of the cobalt based amorphous alloy. Toshiba Materials offers two noise suppression devices, "AMOBEADS " and "SPIKE KILLERS ". AMOBEADS " deliver excellent noise suppression results and are convenient to use by simply being slipped over the leads of the semiconductor device. "AMOBEADS " are also available with a lead thru and in a surface mount configuration. "SPIKE KILLERS ", which are larger in size than "AMOBEADS ", most often are wire wound and are effective in eliminating or minimizing higher noise levels. C Noise Suppression Device R AB RC Snubber Magnetic Snubber Basic Snubber Circuit Diagram B[T] 0.6 Amorphous 0.4 Ferrite 0.2 -80 -40 0 -0.2 40 80 H [A/m] -0.4 -0.6 (100 kHz, RT) B-H Curve(typical) Example for Noise Suppressing Effect (Chopper Converter) With an excellent saturable characteristic, "AMOBEADS " suppress the reverse recovery current of the diode and decrease the noise that is occurring. When the current for diode reverses and tries to go into the recovery condition, the "AMOBEADS " displays a large inductance and oppose the generation of the recovery current. In this instance, a soft recovery is possible for core material with a smaller coercive force. Output Noise Diode Current 1A/div Without Countermeasure With AMOBEADS (AB4×2×8W) - 8 -

ブランド

TOSHIBA

会社名

株式会社 東芝セミコンダクター&ストレージ社

本社国名

日本

事業概要

半導体部門、DRAM、フラッシュメモリ、プロセッサ、汎用LSI

供給状況

 
Not pic File
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