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Инструкция LUNDAHL LL1692A

Инструкция ФорматPDF Размер0,06 МБ Страниц2 КатегорияИнструменты / Контрольно-измерительные приборы ДобавилAnnaLab494

Инструкция для LUNDAHL LL1692A на русском языке. Документ можно использовать для ознакомления с информацией, относящейся к данной модели.

Инструкция представлена в формате PDF, просмотр, скачивание на компьютер, смартфон бесплатно. Возможность печати зависит от используемой программы и настроек устройства. Содержание, структура и объём документа могут различаться в зависимости от модели, версии и редакции руководства. Перед использованием рекомендуется убедиться, что инструкция соответствует вашей модели.

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Tibeliusgatan 7 International Domestic
LUNDAHL
S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930
SWEDEN Fax +46 - 176 13935 0176-13935
TRANSFORMERS
Tube Amplifier Interstage Transformer / Line Output Transformer
LL1692A
LL1692A is an interstage transformer for tube amplifiers, impedance-wise placed between LL1660 and LL1671.
LL1692A is available with various core air gaps optimised for PP or SE drives.
The transformer is wound with a special low capacitance winding technique to achieve best high frequency
performance. It has a special high flux, low distortion audio C-core of our own production.
The Push-Pull version is assembled with a small core air gap to allow for some DC current unbalance. For the
S.E. versions of the LL1692A, the core air gap is chosen such that the denoted DC current (18mA for a
LL1692A/18mA) generates a no signal core flux density of 0.9 Tesla when used with all primaries in series.
This leaves a flux density swing of approx. 0.7 T for the signal.
Winding schematics, physical dimensions, pin and mounting hole layout (all dimensions in mm)
36
Weight Turns ratio Static resistance,
winding A
Static resistance,
winding B
Static resistance,
winding C
0.75 Kg 1+1+1+1 : 1.75+1.75
220 Ω 175 Ω 345 Ω
Max. DC current through any single section: 70 mA
Isolation between primary and secondary windings / between windings and core: 4 kV / 2 kV
Type
LL1692A PP LL1692A PP LL1692A/18m
A
LL1692A/18m
A
Connection Alt M
PP to PP Interst.
1.75+1.75 : 2+2
Alt N
PP Line output
1.75+1.75 : 1
Alt Q
SE Line Output
3.5 : 1
Alt S
SE to SE Interst.
4 : 3.5
Primary DC current for
0.9 Tesla
- - 21 mA 18 mA
Primary Inductance 210H 210H 95H 125H
Freq. Response (+/-1dB)
@ source impedance (*)
Secondaries open
20 Hz – 45 kHz
10kΩ
20 Hz – 50 kHz
10kΩ
10 Hz – 55 kHz
2 kΩ
30Hz - 30 kHz
10 kΩ
Max output
voltage @ 30 Hz
2 x 240V r.m.s. 120V r.m.s. 50 V r.m.s. 175 V r.m.s.
Type
LL1692A/18m
A
LL1692A/18mA
Connection Alt T
SE to SE Interst.
2 : 3.5
Alt V
SE to PP Interst.
1.75 : 2 + 2
Primary DC current for
0.9 Tesla
36 mA 41 mA
Primary Inductance 35H 24H
Freq. Response (+/-1dB)
@ source impedance (*)
Secondaries open
40 Hz - 30 kHz
3 kΩ
50 Hz - 30 kHz
3 kΩ
Max output
voltage @ 30 Hz
175 V r.m.s. 190 V r.m.s.
73
Bottom view
4 x M3
Mounting holes
56
53 61
234578910
131618
21
2
13
16
4
A
5
C
3
B
21
18
8
9
B
C
10
A
7
R080124
(*) The source impedances used in the
tables indicate a recommended upper
limit, unless the specified LF frequency
response can be compromised.
At lower source impedance, bass will
improve but resonance peaking might
occur. Peaking can be reduced using
secondary load resistors or RC networks.
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