面向VFD显示的工业称重仪表开关电源设计

Power Supply Design for the Industrial Weighing Instrument Using VFD Display

针对VFD显示的工业称重仪表供电的需求，该文设计一种开关电源。该电源产生基本的多路输出，其中一路为反馈确保电压稳定，各路输出通过电路转换得到更为精确的电压，不仅为工业称重仪表的主控板、设定显示板安全和稳定地供电，而且解决了传统VFD交流供电体积大的问题。实验结果表明，所设计开关电源性能指标高，是可靠合理、高效的电源。

Aiming at power supply of the industrial weighing instrument.vacuum fluorescent display is chosen to show,a kind of the switch power supply that is designed in this paper supplies several outputs,one of which is used as feedback to ensure voltage stability,the more accurate voltages which come from outputs circuit conversion can provide power safely and stably for main-board ,setting and display board of industrial weighing instrument,and avoid traditional AC power supply for VFD.The experiment shows that the designed switching mode power supply has the characteristics of good performance,is a steady, reliable and highly efficient.