Трансформатор LUNDAHL LL1680. 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
Line Output Transformer for Tube Amplifiers
LL1680
The LL1680 line output transformer is made to match or exceed the specs of the UTC transformer LS-27. The
LS-27 was used in the RCA Tube Mike Pre (which was used in BC-2B Consoles).
For the internal insulation of the LL1680 high impedance sections we have used paper (and not polypropylene foil)
to minimize internal capacitance. Each coil consists of three sections to optimize leakage inductance versus inter-
winding capacitance. The transformer has a special audio C-core of our own production.
Turns ratio:                                             9 + 9 : 1+1+1+1
Winding schematics, physical dimensions, pin and mounting hole layout (all dimensions in mm)
24
1+1+1+1
1    3  2    4  8    6  7    5
8   7    6    5   4    3    2    1
4 x M3
Mounting holes
50
66
Bottom view
9   11     16  14
16    14   11    9
9 + 9
Coil 1     Coil 2
Outer  Inner   Inner  Outer
39                                   53
Weight      Turns ratio        Static resistance,     Static resistance,     Static resistance,
winding 9-11 and 16-14   winding 2-4 and 8-6   winding 1-3 and 7-5
0.35 Kg   9 + 9 : 1 + 1+ 1+ 1       580 W                  11 W                 15  W
Isolation between primary and secondary windings / between windings and core:   4 kV / 2 kV
Max standing DC current through any primary section                               50 mA
Type                       LL1680/5mA     LL1680/5mA      LL1680/5mA      LL1680/5mA
Application               15k : 600 ohm    15k : 600 ohm    15k : 150 ohm    15k : 150 ohm
Balanced output   Unbalanced   Balanced output   Unbalanced
output                          output
Connection                    Alt A           Alt B           Alt C           Alt D
Turns ratio                   18 : 4          18 : 4          18 : 2         18 : 2
Primary DC current for 0.9    5mA             5mA             5mA             5mA
Tesla
Primary Inductance            210H            210H            210H            210H
Frequence response,
+0, -1.5dB (ref. 1kHz)   15 Hz – 50 kHz    15 Hz – 40 kHz    15 Hz – 55 kHz    15 Hz – 40 kHz
Source impedance              15kW            15kW            15kW            15kW
Load                          600 W          600 W           150 W           150 W
Max primary signal voltage    150V            150V            150V            150V
(RMS) at 30 Hz
Max output                  33V RMS         33VRMS.         16V RMS         16V RMS
voltage @ 30 Hz
R041019

LUNDAHL
TRANSFORMERS
Tube Amplifier Line Output Transformer LL1680
Connection Alternatives
Alt A                                           Alt B
Balanced output 600W                           Unbalanced output 600W
16             8
16             8                                              7
7                               14             6
14             6                                              5
5                                              4
4                               11             3
11             3                                              2
2                                9             1
9             1
Alt C                                           Alt D
Balanced output 150W                           Unbalanced output 150W
16             8                              16             8
7                                             7
14             6                              14             6
5                                             5
4                                             4
11             3                              11             3
2                                             2
9             1                               9             1
16              8
7
14              6
5
4
11              3
2
9              1