K&K Audio / Lundahl Transformers

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RE: About LL1664

Posted by KevinC on September 7, 2016 at 13:54:02:
The 50mA version is gapped so that the magnetic field is centered roughly in the most linear region when 50mA of current is passing through the primary winding (in series). The 100mA version has a larger core gap to achieve the same goal with 100mA of current. The maximum current spec is determined by the wire resistance, not the core gap, as it's a thermal limit for the coil wire.