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Bobbin depth of ferroxcube PQ3535 bobbin

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treez

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Hello,
I calculate that the depth of the pq3535 bobbin is 10.4mm
Is this correct?, it seems very deep

..ie all layers of turns can be total of 10.4mm thick

Calc..

(35.5mm-14.7mm)/2 = 10.4mm

(pg 744 of databook) attached
 

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  • CATLOG_FERROX FXC_HB2013.pdf
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Outer diameter is 31.4, not 35.5 as you considered, then the depth is:

(31.4-14.7)/2 = 8.35 mm
 
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Look sharp. 14.7 mm is the bobbin hole diameter, you'll add about 2 mm for the outer diameter of the bobbin tube.
 
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Thanks, so its only 6.35mm deep...to work it out exactly I wonder if we can use the "minimum winding area"?

eg (minimum winding area) / (minimum winding width) = 152/20.8 = 7.3mm = depth pf bobbin.
is this correct I wonder?
 

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