LL1517 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – Audio Output Transformer

 
   
Tibeliusgatan 7
S-761 50 NORRTÄLJE
SWEDEN
Phone
Fax
International
+46 - 176 13930
+46 - 176 13935
Domestic
0176-13930
0176-13935
Audio Output Transformer
LL1517
LL1517 is an audio output transformer for balanced or unbalanced drive. The transformer is built from two three-
section coils, with primaries and secondaries separated by electrostatic shields, and a audio C-core of our own
production. The transformer is housed in a mu-metal housing.
The LL1517 has sufficient low copper resistance to meet broadcast specifications in a conventional drive
configuration, but is (as all output transformers) ideally used with mixed feedback drive circuits. (See separate
paper for mixed feedback design principles).
Turns ratio:
Dims (Length x Width x Height above PCB (mm)):
Pin layout (viewed from component side) and winding schematics:
1+1:1+1
47 x 34 x 18
1
7
6
12
5
11
2
4
3
8
LL1517
3 (top view)
9
6
12
2
8
5
1
7
4
11
9
Spacing between pins:
Spacing between rows of pins:
Weight:
Core:
Housing:
Rec. PCB hole diameter:
Static resistance of each primary:
Static resistance of each secondary:
Leakage inductance of secondaries (sec. in series):
No-load impedance:
Optimum source impedance:
Balance of output (according to IRT, source < 10 Ω , Load 600 Ω):
Maximum output level before saturation (sec. in series, load 600 Ω)
Distortion (achieved with mixed feedback drive circuit, load 600 Ω)
Frequency response (source 10 Ω, load 600 Ω):
Loss across transformer (at midband with 600 Ω load):
Isolation between primary and secondary windings / between
windings and core:
Suggested use
5.08 mm (0.2")
35.56 mm (1.4")
105 g
Audio C-core
Mu-metal
1.5 mm
9.2 Ω
9.5 Ω
0.3 mH
>1kΩ @ 50 Hz, +20 dBU
Minus 18 Ω (See above)
> 60 dB
+ 24 dBU @ 30 Hz
< 0.03 % @ 20 dBU, 30Hz
10 Hz -- 80 kHz +/- 0.3 dB
0.3 dB
4 kV / 2 kV
6
12
5
11
4
LL1517
3
9
2
8
1
7
R980616