【摘要】 针对目前的矿井环境,在适用于井下照明电源原理的研究基础上,设计了以CR6848T芯片为核心构成的电流型脉宽调制开关电源,并对其进行分析和实验,投入现场工作。实践结果表明:该照明电源具有输入电压变化范围宽、频率响应快、电压调整率和负载调整率高、输出电压稳定、纹波小的优点,是一种性能可靠,可推广应用的开关电源。更多还原

【Abstract】 The mine gravity-line motor car is one of the most essential coal transport tools. Because of the underground environment and power supply fluctuation,lighting power supple require higher stability. Aiming at the current mine environment,brings forward a new current-mode pulse-width modulation(PWM) switching power supply,which is designed on a military CR6848Tchip. The improved power supply is tested and used in fieldwork. The result of practice shows that the power supple has many advantages,such as wide voltage range,fast frequency response,high adjusting voltage rate,high adjusting load rate,stable output and small ripple. It is a practical switch power supple with reliable performance.更多还原