【摘要】 在分析国际上通用的各种报警音源的基础上,提出了一种以开关方式调节音量的大功率报警器设计方法.此种报警器无论功率放大器的输出量有多大,音量总能处于工作开关状态,因此可以大大提高效率,并可减少散热片的面积且也便于安装.更多还原

【Abstract】 By analyzing the universal alarm system sound source,a method to design the large-power alarm system based on switch-mode regulated volume is introduced.With this method,no matter how large the output power is,the power amplifier still works on switch mode.Thus the efficiency is improved greatly,the area of radiation fin is reduced,and the installation can be easier.更多还原