This series`s ripple frequency is 60Hz~100kHz(by order).DC bias disable function,Has protections,automatic discharge, multifunctional timer, easyfront-panel, for capacitor factory and the consumerof capacitor. supplyed at a just price.Features:1)DC bias disable function,voltage and current areconstantly adjustable2)Overload, short,over voltage protections3)Automatic discharge4)Multifunctional timer5)Max. current: 50A6)Frequency: 60Hz-100kHz(by order)7)time can be seted in advance as your need8)DC AC display accurately with digital LED9)AC:voltage and current are constantly adjustable10)Input voltage: power source voltage can bechanged on requests11)Custom-made specifications are available