Трансформатор LUNDAHL LL1681. Инструкция на английском языке

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Moving Coil Input Transformer
LL1681
The LL1681 is a large core moving coil input transformer with a mu-metal core.
The LL1681 consists of two coils, each with a two-sectioned primary winding and one high level secondary
winding (with paper insulation) separated by electrostatic shields.
The transformer is magnetically shielded by a mu metal housing.
Turns  ratio:                                            1 + 1 : 13 + 13
Dims (Length x Width x Height above PCB (mm)):           48 x 29 x 20
Pin layout  (viewed from component side) and winding schematics:
10
5             10                 5
4               9
LL1681                       4                      9
8                                       6
1
2   (Top view)     7
1               6                2                      7
8 +can & core
Spacing between pins:                     5.08 mm  (0.2")
Spacing between rows of pins:             35.56mm  (1.4")
Weight:                                   90 g
Rec. PCB hole diameter:                   1.5 mm
Static resistance of each primary:                                  4.8W
Static resistance of each secondary:                               820W
Distortion                                                 < 0.15% at –10 dBU, 50Hz
(Transformer connected 1:26, source impedance 40 ohms)         (typically 0.1%)
< 1% at +5 dBU, 50Hz
Frequency response,  balanced input                          7Hz – 70 kHz +/- 1dB
(Transformer connected 1:13, source 50Hz, sec. level +10dBU)
Frequency response, Unbalanced input                         7Hz – 40 kHz +/- 1dB
(Transformer connected 1:13, source 50Hz, sec. level +10dBU)
Isolation between primary and secondary windings/ between        4 kV / 2 kV
windings and shield:
Connection for turns ratio 1 : 26            Connection for turns ratio 1 : 13
5              10                             5              10
4                9                            4               9
LL1681      8                                 LL1681     8
2    (Top view)     7                         2    (Top view)     7
1                6                            1               6
Indicates phase
R020924