
General properties:
| Type | Turns Ratio | Size (LxWxH mm) | Max Prim. Level. 1% dist, 50Hz (Prim. in series) |
Applications |
|---|---|---|---|---|
| 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 ohms. |
| LL1527XL | 1+1 : 1+1 | 38x24x20.5 | +19 dBU | As LL1527, but with + 3 dB level capability compared to the LL1527 |
| LL1527A | 1+1 : 1+1 | 38x24x17 | +16 dBU | As LL1527. Secondary shields available individually on connector pins. |
| LL1532 | 1+1 : 2 | 28x17x15 | +10 dBU | A small size audio transformer. For isolation, microphone input (200:800 ohms) and bridging input. |
| LL1570 | 1+1 : 1+1 | 38x24x17 | +16 dBU | Splitting 1 direct + 1 isolated outputs. High fidelity isolation and microphone input (200 : 800 ohms) |
| LL1570XL | 1+1 : 1+1 | 38x24x20.5 | +19 dBU | As LL1570, but with + 3 dB level capability compared to the LL1570 |
| 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 (Prim in parallel) |
Splitting 1 direct + 2 isolated outputs. Small size mic. level transformer with the same excellent noise immunity as the LL1581XL. |
| 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". |
| LL7904 | 1+1: 1+1 | 66x32x21 | +23 dBU (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. |
Per Lundahl, email: web_master/AT/lundahl/DOT/se
Lundahl Transformers AB
Tibeliusgatan 7
SE-761 50 Norrtälje
SWEDEN
Phone: +46 - 176 139 30
Fax: +46 - 176 139 35
Email: office/AT/lundahl/DOT/se