new to this forum; old..old navy et ..but have forgotten lots..i am looking for help in calculating the size of capacitors to use as filters in ac to dc powersupply.. have 4 to1 step down xfrmr (1500watt). bridge (full wave rect)diode rectifier 80 amp 1000v.. want to smooth out the pulsating dc some. would like someone to refresh me on the math to calculate the cap type and size for optimal use..thks art..