Type Turns Ratio Size LxWxH Max Primlevel Applications / Comments
LL1531 1+1:2 28x17x15 +20 dBU Small size
LL1540 1+1 :1+1 38x24x17 +30 dBU High level input
LL1544A 1+1+1+1 : 2+2 30x22.5x14.5 +20 dBU Amorphous strip core. General purpose with many connection alternatives. Replaces LL1544 and LL1554
LL1545A 1+1+1+1 : 2+2 38x24x17 +22 dBU General purpose with many connection alternatives. Replaces LL1545
LL1592 1+1 : 1+1 47x28x20 +31 dBU High level line input transformer for extra demanding applications
LL1922 1+1 : 4+4 47x28x24 +26 dBU High level stepup line input. Similar to the UTC LS-10.
LL6404 1 : 1 15.5x11x10 N/A
LL7101 1+1 : 1.4 28x18x10 N/A (Very high!) For Zero Field input circuitry (see datasheet)
LL7901 1+1+1+1 : 1+1+1+1 66x32x21 +34 dBU Very high level, high impedance input.
LL7902 1+1+1+1 : 1+1+1+1 66x32x21 +28 dBU General purpose. Very high quality line input for step-down or step-up