Трансформатор LUNDAHL LL1528. Инструкция на английском языке

Tibeliusgatan 7                        International    Domestic
S-761 50 NORRTALJE         Phone    +46 - 176 13930   0176-13930
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Microphone Input Transformer
LL1528
LL1528 is a microphone input transformers built up from two coils, each with one primary and one secondary
section separated by a electrostatic shield. The core is a high permeability mu-metal core, and the transformer is
housed in a mu-metal can.
Turns ratio:                                             1 + 1 : 2.5 + 2.5
Dimensions (Length x Width x Height above PCB (mm)):     38 x 24 x 17
Pin layout (viewed from component side) and winding schematics:
1                  5
4              8
3               7                    2                  6
LL1528    E
2               6
(top view)                       4                  8
1               5
3                  7
E
Spacing between rows of pins:                             27.94 mm  (1.1")
Offset of earth pin from adjacent row:                    2.54 mm (0.1")
Weight:                                                   46 g
Rec. PCB hole diameter:                                   1.5 mm
Static resistance of each primary:                        42 W
Static resistance of each secondary:                      450 W
Distortion (primaries connected in parallel,              + 0 dBU primary level, 50 Hz: 0.2 %
source impedance 200 W  ):                                + 10 dBU primary level, 50 Hz: 1 %
Self resonance point :                                    > 80 kHz
Optimum termination for best square-wave response         9 kW in series with 3 nF
(Connection 1:5, source imp.  200W ) :
Frequency response (source and load as above):            10 Hz - 40 kHz +/- 0.3 dB
Isolation between windings/ between windings and shield:  4 kV / 2 kV
Connection alternatives
4              8                            4              8
3              7                            3              7
LL1528   E                                  LL1528  E
2              6                            2              6
1              5                            1              5
1 : 2.5                                       1 : 5
R980622