Three-section output transformers with internal electrostatic shields.


Can be used with balanced or unbalanced drive circuits.


Type Turns Ratio Size LxWxH Max Prim. Level @ 30 Hz Drive Type
LL1517 1+1,ct : 1+1 47x34x19 +24 dBU Universal output.
LL1585 1+1 : 1+1 47x34x21 +30 dBU High level universal output transformer.


Three section output transformers without internal electrostatic shields


To minimize capacitive coupling, the secondary windings are placed between the cold ends of the primaries. For balanced and unbalanced drive.


Type Turns Ratio Size LxWxH Max Prim. Level @ 30 Hz Drive Type
LL1539 2 : 1+1 47x34x21 +27 dBU For balanced drive
LL1555 1+1+1+1 : 1+1 33x26x20 +27 dBU For balanced drive. Small size..
LL5402 2 : 1+1 43x28x21 +18 dBU For unbalanced drive


Five section output transformers.


The high sectioning results in low leakage inductance and thus a very high frequency range.


Type Turns Ratio Size LxWxH Max Prim. Level @ 30 Hz Drive Type
LL1524 1+1 : 1+1 48x34x22 +24 dBU Balanced drive.
LL7401 1+1 : 1+1 47x34x17 +20 dBU Balanced drive.


Special type output transformers.


Type Turns Ratio Size LxWxH Max Prim. Level @ 30 Hz Drive Type Applications / Comments
LL1560 2+2 : 1+1+1+1 47x34x23 +20 dBU Balanced drive Four independent outputs active split.
LL1582 1+1 : 1+1 31x26x23 +24 dBU Balanced or unbalanced drive Pin compatible with LL2811, but with internal electrostatic shields.
LL1944 1+1 : 1+1+1+1 47x34x23 + 23 dBU Balanced drive Four independent outputs active split.
LL2734 1+1 : 1.4+1.4 + 0.3+0.3 66 x 39 x 53 +25 dBU Single end class A, 100mA DC For solid state SE output circuits, based on LO1166A
LL2811 1+1 : 1+1 31x26x23 +24 dBU Balanced drive Four section windings. Small footprint. Fits three in a row across a Euroboard