In a step-up transformer the internal capacitance in high impedance windings are always high, due to the many turns of thin wire. In addition, the signal level across a high impedance winding is high (relatively) due to the step-up. When putting high impedance windings in parallel, the result is a high capacitive load on the primary, and dropping HF response. This is the reason why we generally recommend NOT to parallel high impedance windings.
Why not parallel LL9206 high impedance windings? I use the LL9206 as a MC-stepup with turnratio 1:10, and I’m wondering why you don’t recommend termination ”D”. A lower copper resistance should give a better S/N-ratio, or do I miss something?
admin 2015-05-28T14:01:24+01:00 May 28th, 2015|