Design of Power Supply Used in Hydrologic Information System
Sun Yu-xian · Telecom Power Technology · 2009
This paper introduces a kind of switching mode power supply used for hydrologic information system.By using PWM,DC signal from generation system is converted into the square wave signal with a alterable duty cycle.The output voltage is stabilized at twelve volts by changing the duty cycle of DC/DC transformation circuit and adjusting the load characteristics.Experiment shows that this circuit has good stability as well as higher precision in output voltage which can be kept stable quickly.Moreover it can satisfy the requirements of hydrologic information system power supply.