Electroacoustic transducer
Abstract
Abstract Translated from Japanese (57)【要約】 【目的】 振動板の磁気飽和の防止や磁気回路の動作点 の安定化を図って音響出力を高めた電気音響変換器を提 供する。 【構成】 磁性片(20)を備えた振動板(6)と、こ の振動板の背面側に形成された密閉空間(10)と、こ の密閉空間に設置されて前記振動板にバイアス磁束(φ O )を作用させるマグネット(14)と、前記密閉空間 に設置されて前記振動板に交流磁束(φ 1 )を作用させ て振動させる磁気駆動部(12)とを備えた電気音響変 換器であって、前記バイアス磁束が前記振動板に磁気飽 和を生じない程度に設定されたことを特徴とする。 (57) [Abstract] [Purpose] To provide an electroacoustic transducer with enhanced acoustic output by preventing magnetic saturation of the diaphragm and stabilizing the operating point of the magnetic circuit. A diaphragm (6) having a magnetic piece (20), a closed space (10) formed on the back side of the vibration plate, and a bias magnetic flux (φ) installed in the closed space on the vibration plate. An electroacoustic transducer comprising: a magnet (14) that applies O 2 ) and a magnetic drive unit (12) that is installed in the closed space and applies an AC magnetic flux (φ 1 ) to the diaphragm to vibrate. And the bias magnetic flux is set to such an extent that magnetic saturation does not occur in the diaphragm.
Inventors
- 👤 Shoji Ishigaya
- 👤 章二 石ケ谷
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