LL1590 Splitting Transformer, 1 Direct + 3 Isolated

In many splitting applications, the splitting transformer must have a high immunity to input common mode signals, to
stray magnetic fields from e.g. power transformers and to large ground potential differences in receiving systems.
The LL1590 is developed to handle those types of problems. When designing the LL1590, we have used our well
established two coil structure to create a transformer with a high degree of symmetry. The primary winding consists of
four sections, two on each coil, connected in parallel. The three secondary windings consists each of two sections, one
from each coil, separated from the primary sections by electrostatic shields. The symmetric structure results in an
internal cancellation of noise signals caused by external magnetic field. It also increase immunity to ground noise
between secondary systems and reduces the effects of input common mode signals.
The transformer is housed in a mu-metal can and is impregnated in epoxy resin.