Трансформатор LUNDAHL LL1691 70 mA. Инструкция на английском языке

Tibeliusgatan 7                        International   Domestic
LUNDAHL                        S-761 50 NORRTALJE         Phone    +46 - 176 13930   0176-13930
TRANSFORMERS                 SWEDEN                     Fax      +46 - 176 13935   0176-13935
Tube amplifier output transformer LL1691
9k : 8 ohms  (for 845 tubes)
The LL1691 is a dual coil C-core tube amplifier output transformer for 9k: 8 ohms impedance ratio available in
PP and SE versions.
The coil is wound using our high internal isolation technique with isolation foil between each copper layer. The
core is an audio C-core of our own production.
Turns ratio                                                     17+17 : 1
Simplified winding schematics, physical dimensions, pin and mounting hole layout (all dimensions in mm)
63
5    4      2    1
1
4 x M4
Mounting holes
120                               148                                2                   6
1
Bottom view                                               5                   8
8      6
4
90
103
Weight:                                                         4.6 kg
Static resistance of each primary:                              112 W
Static resistance of secondary:                                 0.3 W
Isolation between windings / between windings and core:         4 kV / 2 kV
Max DC current through any primary winding (10W heat dissip):    210mA
LL1691/PP            LL1691/70mA
Primary inductance (approx.)                             75H
Max primary signal         1220V R.M.S. @ 30 Hz   530V R.M.S. @ 30 Hz
Max output power  @ 30 Hz     160W (8W spkr)         30W  (8W spkr)
Suggested use:
V+                                              V+
1                6              Plate            1
6
Plate 1          2                                                2
4                8                               4                8
Plate 2           5                                               5
LL1691 used in Push Pull                        LL1691 used in Single End
Plate-to-plate impedance                         Primary impedance 9k at 8
9k at 8 ohms load                                  ohms load
R050330