Трансформатор LUNDAHL LL2751. Инструкция на английском языке

Tibeliusgatan 7                        International    Domestic
LUNDAHL                        SE-761 50 NORRTALJE        Phone     +46 - 176 13930   0176-13930
TRANSFORMERS                SWEDEN                     Fax       +46 - 176 13935   0176-13935
Filament Current Choke LL2751
The LL2751 is a small size two-coil choke for tube/valve filament current filtering.
The coil is wound using our standard high internal isolation technique with isolation foil between each copper
layer. The core is an audio C-core of our own production.
Winding schematics, physical dimensions, pin and mounting hole layout (all dimensions in mm)
24
6    4     3   1           6     4   1   ?3
4 x M3
Mounting holes
50
64
Bottom view
44                                   54
Weight:                                                         0.44 kg
Static resistance of each winding:                              0.5 ?
Isolation between windings / between windings and core:         4 kV / 2 kV
Coils in series                         Coils in parallel
Type          Approx.     Recommended     Saturating    Approx.    Recommended    Saturating
Inductance    DC current      current    Inductance    DC current      current
(1.25 T)       (2.0 T)                   (1.25 T)      (2.0 T)
LL2751 / 0.6A         0.18 H         0.6 A          1 A        45 mH           1.2 A        2 A
Max. ripple voltage                30 V rms /                               15 V rms /
at rec. DC current                  100 Hz                                    100 Hz
(Ripple voltage is
approx. 0.42 x input
voltage)
Suggested connections:
Serial connection              Parallel  connection
1         3                     1         3
LL2751                         LL2751
4        6                      4        6
Serial connection for improved common mode rejection
1         3
LL2751
4        6
R141127 PL
Note! The LL2751 can also be used in choke input power supplies