摘要
给出了采用PWM脉宽调制技术的本质安全型LED电源的设计方法。该电源通过MOSFET的导通和截止时间来控制占空比的变化,然后调整输出电压和电流,从而使输入电压在85～255V之间变化时都可以得到一个非常稳定的电压和电流输出。这种煤矿井下专用型LED驱动电源可专用于煤矿井下易爆易燃等恶劣环境。
The LED intrinsically safe power driven designed based on the pulse width modulation technology.The pulse width modulation technique is through the MOSFET cut-off time to control the change of occupies emptiescompared,thereby adjusting the output.You can get a very stable voltage current output while the input voltage changes between 85Vto 255V.The intrinsically safe power driven is used for underground mine,mainly for ore inflammable,explosive under such environments.
出处
《物联网技术》
2011年第5期78-79,82,共3页
Internet of things technologies
