Трансформатор LUNDAHL LL1635. 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 Interstage Transformer
LL1635
LL1635 is an interstage  transformer for tube (valve) amplifiers available in Push-pull or Single-end versions.
The transformer is highly sectioned, and wound with a special low capacitance winding technique which
results in very good frequency response. The transformer has a special high flux, low distortion audio C-core of
our own production. NOTE: LL1635 is not suitable for SE to PP interstage. For this application we suggest
transformer LL1660 or LL1660S
Winding schematics, physical dimensions, pin and mounting hole layout (all dimensions in mm)
24
1 + 1
9    7    6    4    2    1    6   7   9    4   2   1
4 x M3
Mounting holes
52
70
Bottom view
19    17    14    12        17  19   14    12
1 + 1
39                                  61
Weight        Turns ratio      Static resistance, each primary   Static resistance, each secondary
0.5 Kg         1+1 : 1+1                 500 W                            500  W
LL1635 P-P   LL1635 /5mA  LL1635/20mA
Primary DC current, primaries in  series ( for B 0 = 0.9T)                 5  mA        20 mA
Maximum DC current before saturation, primaries in  series                 9 mA         35 mA
Primary inductance (primaries in series)                    > 300 H        130 H         30 H
Frequency response, primaries in series                  5 Hz - 60 kHz   10 Hz -60 kHz   20 Hz -75 kHz
(Source 4 kW  for PP and 5mA, 2 kW for 20 mA.  Load 68 pF )   +/- 1 dB    +/- 1 dB      +/- 1 dB
Group delay @ 20 kHz (Source and load as above)              0.5µs         0.5µs         0.5µs
Max. output voltage @ 30 Hz                              2x220 V peak   2x90 V peak    2x90 V peak
(tot. 310Vrms)  (tot. 125Vrms)  (tot. 125Vrms)
Recommended max DC current through any primary section      40mA           40mA          40mA
Isolation between primary and secondary windings / between   4 kV / 2 kV   4 kV / 2 kV   4 kV / 2 kV
windings and core
Application examples. Interstage transformer.
Single-end to single-                              Push-Pull to push-pull
end interstage                                        interstage
5 mA
1                                                   1
2       12
2       12
4       14                                                  14
LL1635                                            4
6                                                   6   LL1635
7       17                                          7       17
*       9       19       *                         *        9       19       *
Indicates phase                                     R030116
*