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Short Form Function List Lundahl Transformers

 

GENERAL PURPOSE TRANSFORMERS

 (FOR APPROX. 600 OHMS IMPEDANCE LEVEL)
TYPE
TURNS RATIO
LEVEL (50hZ)
USAGE
LL1527XL
1+1:1+1
+19dBU
Split 1: 1 direct + 1 isolated. Ground isolation
1+1+1+1:1+1+1+1
+28dBU
For demanding applications

 

LINE INPUT TRANSFORMERS

TYPE
TURNS RATIO
LEVEL (50hZ)
USAGE
1+1+1+1:1+1+1+1
+34dBU
For very high level applications

 

MICROPHONE INPUT TRANSFORMERS

TYPE
TURNS RATIO
LEVEL (50hZ)
USAGE
1+1+1+1:10+10
- 2dBU
High turn´s ratio input. Amorphous core
1+1+1+1:2+2+2+2
+28dBU
High level mic/line input.
1+1+1+1:10+10
- 2dBU
High turn´s ratio input. Amorphous core. For moving coil pickup.
Transformers marked with * have compatible pinout

 

 

 

TUBE AMPLIFIER TRANSFORMERS

TYPE
USAGE
COMMENT
Loudspeaker output transformer
3,3k, 6,0k or 11,5k primary impedance
Non-inverting interstage transformer
Grid choke
Loudspeaker output transformer
1,6k, 3,0k or 5,6k primary impedance
Loudspeaker output transformer
650 Ohms, 1,2k or 2,3k primary impedance
Mains transformer
Mains transformer
Mains transformer
Mains transformer
Interstage / Line output transformer
Various connection alternatives
Loudspeaker output transformer
5k primary, 8 Ohm output
Loudspeaker output transformer
3k primary, 8 Ohm output
Tube anode choke
DC current 15 mA
Tube anode choke
DC current 25 mA
Grid choke
Grid choke 0.8 mA
Interstage / Line output transformer
High current version of LL1660

 

 

 

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venerd́ 20 giugno 2008

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