Notch filter inductor question

IG81 · 11th November 2010, 04:28 PM

I designed a notch filter to remove a resonance peak for a driver. The inductor required is quite big, 18.5mH, and since I have access to a lot of 18ga magnet wire very cheaply I thought I'd make them myself. The resulting inductor will probably have quite a bit of DCR. I want to verify that this DCR is added in series to the electrical model for simulations purpose and could therefore be offset by reducing the actual series resistor by the same ammount. Thanks.

IG

godfrey · 11th November 2010, 05:31 PM

Yes, the DCR is added in series with the inductor.

IG81 · 11th November 2010, 06:23 PM

Thanks!

IG

11th November 2010, 04:28 PM	#1
IG81 diyAudio Member Join Date: Feb 2008	Notch filter inductor question I designed a notch filter to remove a resonance peak for a driver. The inductor required is quite big, 18.5mH, and since I have access to a lot of 18ga magnet wire very cheaply I thought I'd make them myself. The resulting inductor will probably have quite a bit of DCR. I want to verify that this DCR is added in series to the electrical model for simulations purpose and could therefore be offset by reducing the actual series resistor by the same ammount. Thanks. IG

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11th November 2010, 05:31 PM	#2
godfrey diyAudio Member Join Date: Nov 2009 Location: Cape Town	Yes, the DCR is added in series with the inductor.

11th November 2010, 06:23 PM	#3
IG81 diyAudio Member Join Date: Feb 2008	Thanks! IG

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