Title:
DOUBLE FUNCTION TYPE TRANSMITTER-RECEIVER
Document Type and Number:
Japanese Patent JPH1056683
Kind Code:
A
Abstract:
To impart both a transmission function and a reception function to a magnet speaker.
A diaphragm 15 of a sounding cone 17 is supported by an electroacoustic transducing transformer 10 via a fulcrum. The transducing transformer 10 comprises a transmission coil 11 and a reception coil 13 provided coaxially in face with a diaphragm, and is provided with a howling canceling transformer 21. The howling cancelling transformer 21 comprises a primary coil 21 and a secondary coil 23 provided coaxially to adopt cross connection for one of a connection wire between the transmission coil 11 and the primary coil 21 and a connection 33 between the reception coil 13 and the secondary coil 23 and adapt parallel connection for the other.
Inventors:
KIMURA HIROFUMI
Application Number:
JP22436296A
Publication Date:
February 24, 1998
Filing Date:
August 07, 1996
Export Citation:
Assignee:
ASAHI GIKEN KOGYO
International Classes:
H04R3/00; (IPC1-7): H04R3/00; H04R3/00
Attorney, Agent or Firm:
Ichiro Sugawara