inductors

tonysherwin · 7th May 2008, 09:17 PM

forgive my ignorance of electronics but can someone please tell me if inductors can be wired in series to obtain a specific value, ie to obtain 5.7Mh can you combine 4.0Mh and 1.7Mh to obtain the required value.

sdclc126 · 7th May 2008, 09:24 PM

You are correct - inductors in series, capacitors in parallel. Here's an info page:

http://www.partsexpress.com/resource...tion-guide.cfm

Scroll down to "Combining Components To Achieve Needed Values"

gareth · 7th May 2008, 09:25 PM

Yes inductors add up like resistors when connected in series, capacitors do not.

Obviously though the DC resistance will also change

Gareth

Edit..there will also be some 'mutual inductance' which need to be taken into account for effective application

BudP · 7th May 2008, 10:00 PM

Just don't stack the inductors up in a pile. Best to string them out and if they are air coils, orient the coils at 90 degree shift to one another. They will interact otherwise. Also, if you are using large metal sheet capacitors, you want to keep them away from this string of inductors about 4 inches or more.

Bud

7th May 2008, 09:17 PM	#1
tonysherwin diyAudio Member Join Date: Feb 2008	inductors forgive my ignorance of electronics but can someone please tell me if inductors can be wired in series to obtain a specific value, ie to obtain 5.7Mh can you combine 4.0Mh and 1.7Mh to obtain the required value.

7th May 2008, 09:24 PM	#2
sdclc126 diyAudio Member Join Date: Jan 2005 Location: San Diego, CA	You are correct - inductors in series, capacitors in parallel. Here's an info page: http://www.partsexpress.com/resource...tion-guide.cfm Scroll down to "Combining Components To Achieve Needed Values" __________________ Soft Dome

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7th May 2008, 09:25 PM	#3
gareth diyAudio Member Join Date: Jan 2008	Yes inductors add up like resistors when connected in series, capacitors do not. Obviously though the DC resistance will also change Gareth Edit..there will also be some 'mutual inductance' which need to be taken into account for effective application

7th May 2008, 10:00 PM	#4
BudP diyAudio Member Join Date: Feb 2007 Location: upper left crust, united snakes	Just don't stack the inductors up in a pile. Best to string them out and if they are air coils, orient the coils at 90 degree shift to one another. They will interact otherwise. Also, if you are using large metal sheet capacitors, you want to keep them away from this string of inductors about 4 inches or more. Bud

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