Open AccessDesign of Power Life-Span Testing System for Mobile Phone Loudspeaker
Author(s) -
Gao Zi-li,
Yongmei Huang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/719/1/012041
Subject(s) - loudspeaker , mobile phone , span (engineering) , signal (programming language) , amplifier , power (physics) , life span , computer science , acoustics , electrical engineering , engineering , electronic engineering , telecommunications , physics , gerontology , medicine , cmos , quantum mechanics , programming language , civil engineering
In order to obtain the power life-span of mobile phone loudspeaker, a mobile phone loudspeaker test system was designed. The C8051 was taken as the main control core.The sinusoidal signal which was provided by AD9833 signal generating module was amplified by power amplifier module for power life-span test of mobile phone loudspeaker. At the same time, the feedback voltage signals of the system were collected by AD7366. The test software was designed to realize the real-time monitoring and analysis of the power life-span test process of the mobile phone loudspeaker. After many tests, the results manifest that the system runs stably and reliably, and the measurements of each channel are accurate.