Abstract：Multiple harmonic and clutter threatens circuit’s safe,it leads to the equipments’ abnormal and wrong action and makes loose. This article introduces a kind of power supply filter which intends to filter the multiple harmonic and clutter. Also the filter gives consideration to amplitude-frequency characteristics and phase-frequency characteristics. The power supply filter is consisting of voltage divider circuit, band pass filter circuit, power amplifier and isolated output. It may improves the power supply stability and ensure power and electronic equipment run normally.
2013, Vol. 14 
