39 for XBTGT1. 19 for XBTGT2. Design, manufacturers, and worldwide distribution of transformers, inductors.

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I am going to build the inductor in the figure above. I have a ferrite core with a relative permeability of about 70. Based on ARRL formulas, I have plenty of core length to separate the two coils along the length of the core. Should the coils be such that the shorter, 23 uH, coil is wrapped on top of the longer, 470 uH, coil, or should they both be wound on the core itself separately, given that they should be magnetically coupled?

In connecting the coils at the point where C1 joins them I take it that the coils should be wound in the same direction on the core, and if wound from left to right (regardless of being on top of one another or not) that the right most end of L1 Primary should be connected to the left most end of L1 Secondary, based on the dotted terminals in the figure. This is for a radio project wherein this inductor is part of a tuned circuit to receive in the AM band. Given that I am not sure about the relative permeability of the core (it was purchased from an eBay supplier who gave a Russian figure of the relative permeability of M400NN for which I have not found a translation) I will measure the resulting inductance with the aid of a 50 ohm signal generator and a scope.

Fight Night Round 4 Pc Registration Code. Thanks in advance for any answers and advice.