Vatnsheldur aflgjafa er aðallega skipt í eftirfarandi flokka, hver með sín eigin einkenni:
Hringjandi spennu vatnsheldur aflgjafa:
Input spenna: AC 90-130 V eða AC 170-265 v
Output spenna: DC5V, DC12V, DC24V, DC36V
Output Power: 10W, 20W, 30W, 36W, 45W, 60W, 100W, 150W, 200W
Hringjandi núverandi vatnsheldur aflgjafa (Pull Tube):
Input spenna: AC 100-265 v
Output spenna: dc 80-120 v, dc 50-80 v, dc 30-60 v, dc 25-45 v, dc 15-25 v
Output Current: 200mA, 300mA, 350mA, 500mA, 600mA, 700mA, 900mA, 1050mA, 1200mA, 1500mA, 1750mA, etc.
Output Power: 10W, 20W, 30W, 36W, 45W, 50W
Hár aflstuðull vatnsheldur aflgjafa:
Input spennu: AC 100-250 v
Output spennu: dc 25-36 v og dc 25-50 v
Output Current: 300ma, 600mA, 900mA, 1200mA, 1500mA, 1800mA, 2100ma, 2400mA, 2750mA, 3000ma, 3300mA, 3600ma, etc.
