A: What does inverter ln mean? The voltage output of this transformer is adjustable (or multiple groups of voltage output), com generally refers to the common ground terminal, ADJ is short for English adjust, is the meaning of adjustment, refers to the variable terminal, that is, the voltage on this side is variable.
The common end of the secondary coil, some transformer output winding is tapped, that is, tapped from 12V, tapped from 15V, tapped from 24V, these three voltages are not the same, but the other end (COM end) is the same head.
It doesn't feel very special, either the model number of a brand, or L is left, R is right,in is enter. So it's lrin. There's really no better explanation than that. Specific, you can take a picture and send it to see.