參數(shù)資料
型號(hào)： LL1581XL
廠商： Electronic Theatre Controls, Inc.
英文描述： Splitting Transformer
中文描述： 分裂變壓器
文件頁(yè)數(shù)： 1/2頁(yè)
文件大小： 36K
代理商： LL1581XL
LL1581XL
Page 1 of 2
LL1581XL
Splitting Transformer
In many splitting applications, the splitting transformer must have a high immunity to input common mode signals, to
stray magnetic fields from e.g. power transformers and to large ground potential differences in receiving systems.
The LL1581XL is developed to handle those types of problems. When designing the LL1581, we have used our well
established two coil structure to create a transformer with a high degree of symmetry. The transformer is built up from
two primary windings (which should be used in parallel) and two secondary windings. Each secondary winding is built
up from two sections, one from each coil. Its own electrostatic shields surround each secondary section. The symmetric
structure results in an internal cancellation of noise signals caused by external magnetic field. It also increase immunity
to ground noise between secondary systems and reduces the effects of input common mode signals.
The transformer is housed in a mu-metal can and is impregnated in solventless epoxy resin.
Turns ratio:
Pin layout
(viewed from component side)
and simplified winding schematics:
1 + 1 : 1 + 1
Spacing between
pins
5.08 mm (0.2")
Spacing between
rows of pins
27.94 mm (1.1")
Offset of earth pins from
adjacent row:
2.54 mm (0.1")
Recommended
PCB hole diameter:
1.5 mm
Dimensions (Max. L x W x H above PCB(mm))
Weight:
Static resistance of each primary:
Static resistance of each secondary (Pins 5 - 6 and pins 7 to 8):
Self resonance point :
Distortion
38 x 24 x 20.5
61 g
61
51 and 71
> 200 kHz
0.1% @ +3 dBU, 50 Hz
1 % < @ +13 dBU, 50 Hz
10 Hz -- 100 kHz +/- 0.5 dB
Frequency response
(Ref : -6 dBu, 1kHz)
Test arrangement:
Parallel input - parallel output . Source 150
, load 10 k
CMRR at 20 kHz
(Source 600 ohms, load 2 x 10k)
CMRR at 20 kHz from sec. to sec.
(Source 600 ohms, load 2 x 10k)
Isolation test primary - secondary / secondary - secondary / E1 - E2
Application example. Component side view.
> 60 dB
> 40 dB
4 kV
/
2 kV / 1 kV RMS
E1
Splitting 1: 1 + 1
3
2
1
8
7
6
4
5
+
+
+
E2
R990105
Tibeliusgatan 7
S-761 50 NORRTLJE
SWEDEN
International
+46 - 176 13930
+46 - 176 13935
Domestic
0176-13930
0176-13935
Phone
Fax
3
2
1
8
7
6
4
5
E2
E1
LL1581
(top view)
E 2 (+ core)
8
E 1 (+ can)
3
4
2
1
7
6
5
Secondaries can be connected individually.
(Function does not require that both
secondaries are connected/used)
Primary signal from
microphone cable, with or
without phantom power.
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