Трансформатор LUNDAHL LL1580. 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
LL1580 Splitting Transformer
The LL1580 is designed for splitting signals in application where large and noisy ground differences appear, but where
external magnetic fields are under control. By careful design, including double electrostatic shields, the capacative
coupling between the different parts of the transformer is kept to a minimum. The transformer is built up from two coils,
each with primary and secondary windings separated by double electrostatic shields, and a high permeability mu-metal
core. The two coil structure in combination with the mu-metal can results in high immunity to external magnetic fields.
Turns ratio:                                             1 + 1 : 1 + 1
Pin layout (viewed from component side) and winding schematics:
E 1
1                   5
4              8
E2
3              7            2                   6
EP LL1580
2    (top view)   6         4                   8
E1
1              5
3                   7
EP                     E 2
EP also can + core
Spacing between          Spacing between      Offset of earth pin from    Recommended
pins                       rows of pins           adjacent row:         PCB hole diameter:
5.08 mm  (0.2")       27.94 mm  (1.1")         2.54 mm (0.1")             1.5 mm
Dimensions (Max. L x W x H above PCB(mm))                        38 x 24 x 20.5
Weight:                                                          61 g
Static resistance of each primary:                               40 W
Static resistance of each secondary:                             49 W
Self resonance point :                                           > 200 kHz
Optimum load for best square-wave response (secondaries. in series):  4 kW in series with 0.5 nF
Test arrangements for distortion and frequency response tests:
Parallell input - parallel output . Source 150W  , load 100 kW
Distortion                                                       0.1% @ +  0 dBU,  50 Hz
1  % < @ +10 dBU, 50 Hz
Frequency response (Ref : -6 dBu, 1kHz)                          10 Hz -- 100 kHz +/- 0.5 dB
Isolation winding-winding / winding-shield /  shield-shield      4 kV / 2 kV / 2 kV
Application examples. Viewed from component side
Serial-serial connection (1 : 1)  Parallel-parallel connection (1 : 1)  Parallel-serial connection  (1 : 2)
for line input or output           (e.g. mic input)                (e.g. mic. input)
+                               +            +
+   4           8               +   4           8                    4            8  +
E2                              E2                               E2
3            7                  3            7                   3            7
EP                              EP                               EP
2            6                  2            6                   2            6
E1                               E1                               E1
1            5                  1            5                   1            5
Parallel-split connection with separate grounds (1 : 1 + 1)
+
4             8
E2
3             7
EP
2             6
E1
1             5
+                          +
R981105