Winding a toroid inductor, is this calculation correct?

Thread Starter

JMKL

Joined Aug 24, 2019
1
Hi,
I am going to wind an tapped toroid inductor for a LCR circuit in an equalizer.
I have calculated the number of turns I need for each winding.
This is my first time winding an inductor so I need to get some things straight.
What to do with the 10 kHz tap, should I twist a wire with the 12 kHz tap in order to have two taps with 31.4 mH?

And did i do this calculation correct?

Info:
Core type MPP
OD 39.90 mm
ID 24.1 mm
HT 14.5 mm
AL value: 740 +/- 8% (nH)
MPP Permeability: 550 (μ)
Wire gauge: 34 AWG

16 KHz - 29.9 mH 195 turns (wire lengh for 29.9mH 195 turns = 8.829 m)
12 kHz - 31.4 mH add 5 turns
10 kHz - 31.4 mH twist a loose wire to 12 kHz ^?
8 kHz - 48.2 mH add 48 turns
5 kHz - 67.5 mH add 45 turns
4 kHz - 87.9 mH add 41 turns
3 kHz - 156 mH add 111 turns

I used this calculator https://coil32.net/online-calculators/ferrite-torroid-calculator.html



Help is much appreciated!
All the best.
 
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