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General Purpose Transformers

Lundahl

General Purpose Transformers

$75.00

General Purpose Transformers

General purpose audio transformers for ground isolation, for splitting and for balanced-to-unbalanced conversion. 

General properties:
Many different connection alternatives possible
Moderate copper resistance (50 Ω per section typically)
Medium signal level capability (Max 10 dBU at 50 Hz per section typically)
Excellent magnetic and electrostatic shielding
High mu cores (mu metal or amorphous strip core)

Isolation transformers

Type  Turns Ratio Size LxWxH Max Primary Level
LL1527 1+1 : 1+1 38x24x17 +16 dBU  
 The "standard" problem solver. Ground isolation, MS decoding, splitting 1 direct + 1 isolated outputs. Mic input 200:800 Ω.
LL1527A 1+1 : 1+1 38x24x17 +16 dBU  
 As LL 1527. Secondary shields available individually on connector pins.
LL1527XL 1+1 : 1+1 38x24x20.5 +19 dBU
 As LL1527, but with + 3 dB level capability compared to the LL1527
LL1532 1+1 : 2 28x17x15 +10 dBU
 A small size audio transformer. For isolation and microphone input (200:800 Ω).
LL1570 1+1 : 1+1 38x24x17 +16 dBU  
 Splitting 1 direct + 1 isolated outputs. Extra wide bandwidth. Microphone input (200 : 800 Ω)
LL1570XL 1+1 : 1+1 38x24x20.5 +19 dBU  
 As LL1570, but with + 3 dB level capability compared to the LL1570.
LL1588 1+1 : 1+1 47x28x24 +28 dBU  
 High level isolation applications 1:2 microphone input. Phase splitting.
LL1684 1+1 : 1+1 42x28x22 +25 dBU  
 Amorphous core version of LL1588. High level isolation applications 1:2 microphone input. Phase splitting.
LL7902 1+1+1+1 :1+1+1+1 66x32x21 +28 dBU  
 High level high quality general purpose transformer for very demanding applications. "When only the best is good enough".

   

Splitting transformers

LL1581XL 1+1 :1+1 38x24x20.5 +13 dBU (Prim in parallel)  
 Splitting 1 direct + 2 isolated outputs. Very high immunity to external magnetic fields and to large ground differences.
LL1583 1 : 1+1 28x17x15 +8 dBU  
 Splitting 1 direct + 2 isolated outputs. Small size mic. level transformer with the same excellent noise immunity as the LL1581XL.
LL7904 1+1 :1+1 66x32x21 +23dBU (Prim. in parallel 
 Very high level splitting transformer for 1 direct + 2 isolated outputs. Very high immunity to external magnetic fields and to large ground differences.
LL1590 1+1 :1+1 47x28x23 +13 dBU  
 Splitting1 direct + 3 isolated outputs.



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