Трансформатор LUNDAHL LL1530. Инструкция на английском языке

Tibeliusgatan 7                        International    Domestic
S-761 50 NORRTALJE          Phone    +46 - 176 13930   0176-13930
SWEDEN                      Fax      +46 - 176 13935   0176-13935
Microphone Transformer / D-I Box Transformer
LL1530
LL1530 is a microphone input transformer used for matching a 200 or 800 W microphone to 10 kW or for
matching a high impedance source to a microphone input.
The transformer consists of two coils, each with one primary and one secondary winding separated by an
electrostatic shield, and a high permeability mu-metal core. The transformer is encapsulated in a mu-metal case
for magnetic shielding.
For best performance, the high impedance side of the transformer  (3.5 + 3.5) should be connected in series.
Turns ratio:                                             1 + 1 : 3.5 + 3.5
Dims (Length x Width x Height above PCB (mm)):           38 x 23 x 16
Pin layout (viewed from component side) and winding schematics:
1                   5
4              8
3               7                2                   6
LL1530   E
2    (top view)   6              4                   8
1               5
3                   7
E
Spacing between pins:                                    5.08 mm  (0.2")
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:                       42W
Static resistance of each secondary:                     790W
Distortion (primaries connected in series, source impedance 800W ): +  6 dBU (primary level)  0.1% @ 50 Hz
+16 dBU (primary level)  < 1% @ 50 Hz
Self resonance point :                                   > 100 kHz
Recommended termination for best square-wave response:
connection 1:3.5     10 kW  in series with 220 pF
connection 3.5:1     2 kW  in series with 2.2 nF
connection 7:1       1 kW
Frequency response
(1:3.5,  source 800W  , load  10kW  in series with 220 pF):  20 Hz -- 30 kHz +/- 0.3 dB
Isolation between windings/ between windings and shield:  4 kV / 2 kV
Connection alternatives (Component side view):
4              8                            4              8
3              7                            3              7
LL1530    E                                 LL1530    E
2              6                            2              6
1              5                            1              5
1 : 3.5                                      1 : 7
R980622