Lundahl LL1538 Microphone Input Transformer
Lundahl LL7401 Audio transformer
Category
Manufacturer
Item no.
- LL7401
Product weight
- 0,09 kg
Shipping weight
- 0,10 kg
Gear
Application
Compliance
Interesting items
Description
LL7401 is an audio output transformer for balanced drive. In LL7401 a five section winding structure is used. This results in a very low leakage inductance without high capacitive coupling and low isolation voltage, which are drawbacks of the bifilar winding technique.
Turns Ratio: 1 + 1: 1 + 1
Technical Details:
- Dimensions (Max. L x W x H above PCB(mm)) 28 x 17 x 15
- Weight: 25 g
- Static resistance of primary (in parallel) 56 ohms
- Static resistance of each secondary (Pins 10 to 7 and pins 6 to 9): 95 and 130 ohms
- 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? , load 10 k ohms
- 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
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