Re: Wire length estimate for toroid winding
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I wound one and measured the inductance and it was too high with 30 turns. Dropped it to 28 and it's right on the money. The wire length was spot on, with a little for a pigtail.
Jack, W8TEE
On Friday, November 16, 2018, 1:16:17 PM EST, Mike Yancey <mikeyancey@...> wrote:
On Wed, Nov 14, 2018 at 02:15 PM, Jack Purdum wrote:
4.3
That's what I get:
https://www.mikeyancey.com/hamcalc/toroidcalculator.php
Inductance
The Desired Inductance (L): 4.3 ?H
Calculated Inductance: 4.23 ?H (98.4% of desired L)
Turns Required: 30
Length of Wire Needed: 24 inches / 61 cm
Toroid Detail
Part Number: T-68-6
Color: Yellow
Frequency Range: 10 to 50 Mhz
Permeability (u): 8
AL: 47 ?H/100 turns
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