| 摘要 |
PURPOSE:To facilitate anti-vibration measures and to reduce induced noises by fixing a balancer to a synthetic resin for molding a magnetic circuit part in one body and winding a hum-back coil in the direction reverse to a voice coil on said balancer. CONSTITUTION:A balancer 15 fixed to a guide part 9a of a synthetic resin 9 for molding in one body a magnetic circuit part 8 for consisting of a magnet 8a, magnetic yoke 8b and ball piece 8c shifts downward the gravity position of a dynamic microphone unit, and therefore anti-vibration measures for a finished microphone can be facilitated. A hum-back coil 16 is wound in the direction reverse to a voice coil 14 so that an output of the hum-back coil 16 can be canceled out with respect to an output of the voice coil 14, and then connected in serial. Induced noises can be reduced accordingly. |
