宽带电话网络中的反激式电路电源

随着宽带接入的到来，许多公司已经开发出了高高压SLIC（用户线路接口卡），控制振铃和语音传输电话系统。SLIC组件基本上执行两个功能。一个正在振铃手机客户的处所。另一种是摘机操作回路电流产生。SLIC组件的电源有特殊要求。

Maxim>AppNotes>BatteryManagementPower-SupplyCircuitsKeywords:SLIC,subscriberlineinterfacecard,SLICpowersupply,REN,broadband,DSL,cablemodem,powersupplycontrollerNov12,2001APPLICATIONNOTE850FlybackCircuitPowersBroadbandPhoneNetworksWiththeadventofbroadbandaccess,manycompanieshavedevelopedhighvoltageSLICs(subscriberlineinterfacecard)whichcontroltheringingandvoicetransmissiononphonesystems.TheSLICsessentiallyperformtwofunctions.Oneisringingthephoneatthecustomer'spremises.Anotherisgeneratingloopcurrentforoff-hookoperation.PowersuppliesforSLICshavespecialrequirements.MultipleLine,MultiplePhoneApplicationsPowerRequirementsTheequivalentcircuitforaUSringer,attheringerfrequencyo