Инструкция LUNDAHL LL1583

Инструкция

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Инструкция для LUNDAHL LL1583 на русском языке. Документ можно использовать для ознакомления с информацией, относящейся к данной модели.

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LL1583

Page 1 of 2

LL1583

Small Size 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.

In the design of the LL1583, 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 increases 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.

Pin layout (viewed from component side) and (simplified) winding schematics:

Spacing between pins Spacing between

rows of pins

Recommended

PCB hole diameter:

2.54 mm (0.1") 20.32 mm (0.8") 1.3 mm

Turns ratio:

1 : 1 + 1

Dimensions (Max. L x W x H above PCB(mm))

28 x 17 x 15

Weight:

25 g

Static resistance of primary (in parallel)

Ω

Static resistance of each secondary (Pins 10 to 7 and pins 6 to 9):

95 and 130

Ω

Self resonance point :

> 200 kHz

Distortion

0.1% @ -2 dBU, 50 Hz

1 % < @ 8 dBU, 50 Hz

Frequency response (Ref : -6 dBu, 1kHz)

10 Hz -- 120 kHz +/- 0.5 dB

Test arrangement: Parallel input - parallel output . Source 150

Ω

, load 10 k

Ω

CMRR at 20 kHz (Source 600 ohms, load 2 x 10k)

> 60 dB

CMRR at 20 kHz from sec. to sec. (Source 600 ohms, load 2 x 10k)

> 40 dB

Isolation test primary - secondary / secondary - secondary / E1 - E2 4 kV / 2 kV / 1 kV RMS

Splitting 1: 1 + 1

R990514





Tibeliusgatan 7 International Domestic

S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930

SWEDEN Fax +46 - 176 13935 0176-13935

Application example. Component side view.

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.

1 6

LL1583

(top view)

5 (+ core)

8 (+ can)

1 6

LL1583

(top view)

NOTE! Pins 1 and 3 must be

connected!

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Инструкция LUNDAHL LL1583

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