Can you help me how to tap an inductor of 40 turns? It is tapped at 25%.?

Question

help me to know the basics of tapping an inductor

Answer 1

For small air-core inductors there are a couple of methods that I have used.

1. Wind 10 turns and carry the end lead out about 1 inch away from the coil, then carry the wire back next to the 1 inch lead, back to the coil and continue winding for another 30 turns.  Scrape off the insulation of the double-wire lead and use that as the tap.

2. Wind 10 turns.  Scrape off the insulation at the 10th turn, leaving an opening to solder a wire on the coil.  Continue winding 40 turns.  Solder a wire onto the scraped off opening for use as the tap.

I like the first method best, but both will work.

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