简易扬声器科普展品
申请公布号:CN2881844Y
申请号:CN200520140376.9
申请日期:2005.12.26
申请公布日期:2007.03.21
发明人:闫光亚;刘曦东
分类号:G09B25/00(2006.01)
主分类号:G09B25/00(2006.01)
代理人:何梅生
地址:230088安徽省合肥市高新技术开发区天乐路8号
摘要:简易扬声器科普展品,其特征是由CD播放机、功放机和模拟扬声器构成播音回路,所述模拟扬声器采用具有喇叭口白铁皮桶,在白铁皮桶内,放置磁钢,接收功放机输出信号的电缆缠绕在白铁皮桶的外周。由CD播放机产生的音频信号经功放机放大后,推动模拟扬声器输出,观众即可听到由白铁皮桶播放出的美妙的音乐。本实用新型以极其简单的结构形式,采用日常的生活用品即模拟出扬声器,简易而生动,趣味性强,寓教于乐。
主权项:1、简易扬声器科普展品,其特征是由CD播放机(1)、功放机(2)和模拟扬声器构成播音回路,所述模拟扬声器采用具有喇叭口的白铁皮桶(3),在所述白铁皮桶(3)内,放置磁钢(5),接收功放机(2)的输出信号的电缆线(4)缠绕在白铁皮桶(3)的外周。
Vacuum insulator using glass white wool and its fabrication method
Integrated circuit and associated design method with antenna error control using spare gates
Method and apparatus for producing software
Method for recovering products from process solutions
Power distribution in multi-chip modules
Absorbent article, method and apparatus for preparing same
Liposuction cannula with abrading apertures
XY TABLE IN SEMICONDUCTOR DEVICE
DRY COLOR TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT AND METHOD FOR PRODUCING THE SAME
METHOD AND DEVICE FOR MANUFACTURING THIN FILM LAMINATE
METHOD FOR SETTING FORCE FOR ATTACHING BUTTON
ARC-SHAPED HEATER MADE OF MoSi2 AND METHOD AND DEVICE FOR MANUFACTURING IT
FUEL DEVICE OF INTERNAL COMBUSTION ENGINE
VALVE DEVICE FOR INTERNAL COMBUSTION ENGINE