Lundahl LL1922 Audio transformer
Lundahl LL6404 Very Small Size Zero Field Input Transformer
Category
Manufacturer
Item no.
- LL6404
Product weight
- 0,01 kg
Shipping weight
- 0,10 kg
Application
Compliance
Description
In a Zero Field (ZF) transformer, the magnetic field caused by the input signal should be balanced by a feedback loop which includes the transformer's secondary winding (see schematic below).
The feedback arrangement extends the low frequency range (to almost DC!) while maintaining the small size of the transformer. The very small size of the LL6404 requires that the feedback resistor value be very close to the secondary winding resistance.
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