Lundahl Transformers

Tibeliusgatan 7, 761 50 Norrtälje

Phone: +46 176 139 30

Fax: +46 176 139 35

September 2019

LL5607

September 9th, 2019|

LL5607 is a C-core line output transformer designed for Calrec Audio, probably used as a 1.5 : 1 transformer. LL5607 has an internal Faraday shield and a mu metal housing. Pin configuration (as seen from PIN side) 6, 5, 4, 3, 2, 1 12, 11, 9, 8, 7 Usage (1.5 : 1): in+ pin 1 [...]

April 2019

LL2612

April 30th, 2019|

LL2612 is a line input transformer, 1:1, with double Faraday shields. LL2612 pin-out (pin side) 4, 2, 1 8, 7, 6, 5 In + 1 In - 4 Shield in 2 Out+ 8 Out- 5 Shield out 6 Housing 7

January 2018

LL1522

January 9th, 2018|

LL1522 is a high impedance line input transformer, normally used 2:1 It has been discontinued for many years. LL1522 pinout (pin side) 4, 3, 2, 1 8, 7, 6, 5 For high impedance line input, 2:1 use as follows: In+ 4 In- 2 Connect 1+3 Out+ 8 + 5 Out- 7 Ground (shield) 6

December 2017

Calrec line output LL5608

December 6th, 2017|

LL5608 is a line output transformer designed for Calrec Audio, turns ratio 1.55+1.55 : 1+1 Pin configuration (as seen from PIN side) 7,  6,  5,  4,  3,  2,  1               14, 13, 12,     10,  9,  8 Usage (1.55 : 1 ) in+ pin 1 in- pin 5 connect pin 7 + 3 out+ pin 8 out- pin 12 connect pins 10 + 14 Housing [...]

September 2016

LL5006

September 12th, 2016|

LL5006 is a line output transformer designed for the Danish company NTP Turns ratio 1.2 : 1 + 1 5      4     3     2    1 10    9          7     6 Usage (for 1.2 : 2 line output) in+ pin 5 + pin 1 in- [...]

June 2015

SR504a och SR504

June 17th, 2015|

SR504A is a microphone transformer 200 ohm : 2k 1  2  3  4  SR504 5 6  7  8   SR504 /SR504A PCB Flying leads in+ 2 red in- 3 yellow out+ 6 green out- 7 grey core 1 housing 4 Faraday shield 5+8 black SR504a is similar to the more modern transformer LL1538

SR503

June 17th, 2015|

SR503 is a line output transformer with turns ratio 1.4 : 1. in+ 8 in- 6 out+ 10 out- 4

SR502

June 17th, 2015|

SR502 is a high impedance bridging input transformer. in+ 1 in- 5 in centertap 3 out+ 7 out- 9 Faraday shields 6+10

SR501

June 17th, 2015|

SR501 is a high level 600 ohm : 600 ohm isolation transformer.   in+ 1 in- 5 out+ 7 out- 9 Faraday shields 6+10

LL9305

June 17th, 2015|

LL9305 is a line output transformer with Faraday shields. Turns ratio 1+1 : 1.6 + 1.6   6  5  4  3  2  1 12 11    9  8  7 Usage (for 1:1.6 line output) in+    pin 6 in-    pin 3 connect    pin 4 + pin 1 out+    pin 12 out-    pin 8 connect pin 7 + [...]