Mean well 20w single output switching power supply lpv 20 series mean well lpv 20 24 the mean well lpv 20 12 is a 20w single output switching power supply from the lpv 20 series this 20w power supply is both small and compact making it ideal for use where space is limitedthis universal ac input enclosed switching power supply is highly reliable and cooled by air convection it has a wide voltage input range of 90 to 264v ac and 127 to 370v dc making it ideal for worldwide use application