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Руководство пользователя LUNDAHL LL1676. Основные функции, характеристики и условия эксплуатации изложены на 1 странице документа в pdf формате.
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Tibeliusgatan 7 International Domestic
SE-761 50 NORRTALJE Phone +46 - 176 13930 0176-13930
SWEDEN Fax +46 - 176 13935 0176-13935
High level Tube Amplifier Input Transformer
LL1676
The LL1676 is a large, high level, high performance audio transformer built with the well know Lundahl
amorphous core
The LL1676 consists of two coils, each with a two-sectioned primary winding and a high level secondary
winding separated by electrostatic shields. . The core is a two-component amorphous strip core. The very high
mu of the core results in a phase shift of less than 0.5 degree at 10Hz.
The transformer is magnetically shielded by a mu metal housing.
Turns ratio: 1 + 1 : 2 + 2
Dims (Length x Width x Height above PCB (mm)): 43 x 28 x 21
Pin layout (viewed from component side) and winding schematics:
7
5 10 2
4 9
LL1676 1 6
8 9
4
2 (Top view) 7
1 6 5 10
8 +can & core
Spacing between pins: 5.08 mm (0.2")
Spacing between rows of pins: 30.48mm (1.2")
Weight: 80 g
Rec. PCB hole diameter: 1.5 mm
Static resistance of each primary (average): 145W
Static resistance of each secondary (average): 605W
Distortion 22V rms (+29 dBU) secondary level,
(primaries connected in parallel, source impedance 600W ): 30 Hz: 1%
22V rms (+29 dBU) secondary level,
50 Hz: 0.2%
Self resonance point : 70 kHz
Optimum termination for best frequency response 10k – 33k
(source imp. 600W ) :
Frequency response 10Hz – 40kHz +/- 0.5dB
(source 600 , load 10k) -3dB @ 80kHz
Isolation between primary and secondary windings/ between 3 kV / 1.5 kV
windings and shield:
Suggested usage, 1:2+2
5 10
4 9
LL1676 8
2 (Top view) 7
1 6
Indicates phase
R011127