Type Turns Ratio Size LxWxH Max Primlevel Applications / Comments
LL1527 1+1 : 1+1 38x24x17 +16 dBU The "standard" problem solver. Ground isolation, MS decoding, splitting 1 direct + 1 isolated outputs. Mic input 200:800 ohms.
LL1527A 1+1 : 1+1 38X24X17 +16 dBU As LL1527. Secondary shields available individually on connector pins.
LL1527XL 1+1 :1+1 38x24x20.5 +19 dBU As LL1527, but with + 3 dB level capability compared to the LL1527
LL1532 1+1 : 2 28x17x15 +10 dBU A small size audio transformer. For isolation, microphone input (200:800 ohms) and bridging input.
LL1570 1+1 : 1+1 38x24x17 +16 dBU Splitting 1 direct + 1 isolated outputs. Extra wide bandwidth. Microphone input (200 : 800 ohms)
LL1570XL 1+1 : 1+1 38x24x20.5 +19 dBU As LL1570, but with + 3 dB level capability compared to the LL1570
LL1581XL 1+1 : 1+1 38x24x20.5 +13 dBU (Prim in parallel) Splitting 1 direct + 2 isolated outputs. Very high immunity to external magnetic fields and to large ground differences.
LL1583 1 : 1+1 28x17x15 +8 dBU Splitting 1 direct + 2 isolated outputs. Small size mic. level transformer with the same excellent noise immunity as the LL1581XL.
LL1588 1+1 : 1+1 47x28x24 +28 dBU High level isolation applications 1:2 microphone input. Phase splitting.
LL1590 1 : 1+1+1 47x28x23 +13 dBU Splitting1 direct + 3 isolated outputs.
LL1684 1+1 : 1+1 42x28x22 +25 dBU Amorphous core version of LL1588. High level isolation applications 1:2 microphone input. Phase splitting.
LL7902 1+1+1+1 :1+1+1+1 66x32x21 +28 dBU High level high quality general purpose transformer for very demanding applications. "When only the best is good enough".
LL7904 1+1: 1+1 66x32x21 +23dBU (Prim. in parallel) Very high level splitting transformer for 1 direct + 2 isolated outputs. Very high immunity to external magnetic fields and to large ground differences.