Outlet is dead but ears are hot!? Whassup?

03-22-2009, 11:05 PM	#31
hayewe farm Member   Join Date: Mar 2009 Posts: 780	Outlet is dead but ears are hot!? Whassup? Quote: Originally Posted by HandyPete Sorry I don't have the time nor the talent to explain just how far off this remark is. Z does not equal E/I !!!! and no, you cannot measure the DC resistance to find reactance...NOT! (hint: iron has something to do with the answer) _pete If I remember correctly, it has more to do with number of turns than iron.

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03-23-2009, 10:51 AM	#32
Yoyizit It was a dark and stormy     Join Date: Jul 2008 Location: NW of D.C. Posts: 5,954	Outlet is dead but ears are hot!? Whassup? Quote: Originally Posted by HandyPete Sorry I don't have the time nor the talent to explain just how far off this remark is. Z does not equal E/I !!!! and no, you cannot measure the DC resistance to find reactance...NOT! (hint: iron has something to do with the answer) _pete Z=E/I=R + jXL We already know Z. Once you know R you can calculate XL (at 60 Hz), and you know XL "is at right angles" to R. If R = XL = 4500 ohms then Z would = 6364/45° It's vector algebra. Probably, though, the Z is somewhat dependent on the position of the iron slug in the solenoid. Last edited by Yoyizit; 03-23-2009 at 11:01 AM.

03-23-2009, 02:12 PM	#33
hayewe farm Member   Join Date: Mar 2009 Posts: 780	Outlet is dead but ears are hot!? Whassup? The number of turns in the coil will have a greater effect on the inductive reactance than the iron core.

03-23-2009, 09:01 PM	#34
Yoyizit It was a dark and stormy     Join Date: Jul 2008 Location: NW of D.C. Posts: 5,954	Outlet is dead but ears are hot!? Whassup? Quote: Originally Posted by hayewe farm The number of turns in the coil will have a greater effect on the inductive reactance than the iron core. Wiki seems to agree with you, with the N^2 term in the formula. http://www.google.com/search?client=...UTF-8&oe=UTF-8 Finding a formula for a coil with a core having a high permeability seems to be a little more difficult.