It is currently Mon Jul 06, 2020 1:06 pm

Click the link below to visit the site sponsor

The Ham Radio Shop




Post new topic Reply to topic  [ 3 posts ] 
 Toroidal inductor in a tuner 
Contributor 2020
User avatar

Joined: Tue Oct 09, 2012 1:09 pm
Posts: 11404
Location: West Midlands
Feedback: 106 (100%)
Reply with quote
Post Toroidal inductor in a tuner
In an HF tuner, how much of a disadvantage would a toroidal inductor be compared with an air cored inductor?

_________________
===================
Gee Three Eee Jay Ess - RSGB, SARL, G-QRP, EPC
My email address is correct on QRZ.com
===================


Sun Apr 12, 2015 6:56 am
Profile Send private message

 Toroidal inductor in a tuner 
Silent Key

Joined: Fri May 22, 2009 1:23 pm
Posts: 5637
Location: Northampton IO92ME
Feedback: 1 (100%)
Reply with quote
Post Re: Toroidal inductor in a tuner
The difference is probably not noticeable - you can achieve very similar values of Q if you use the correct core and wire.

For example, according to W8JI, an air-cored coil wound with #12 wire has a Q in the range 300-500; a large #2 iron powder core has a Q in the range 500-600 at 1.8MHz.

Steve G3TXQ


Sun Apr 12, 2015 8:05 am
Profile Send private message WWW

 Toroidal inductor in a tuner 
Contributor 2020
User avatar

Joined: Tue Oct 09, 2012 1:09 pm
Posts: 11404
Location: West Midlands
Feedback: 106 (100%)
Reply with quote
Post Re: Toroidal inductor in a tuner
G3TXQ wrote:
The difference is probably not noticeable - you can achieve very similar values of Q if you use the correct core and wire.

For example, according to W8JI, an air-cored coil wound with #12 wire has a Q in the range 300-500; a large #2 iron powder core has a Q in the range 500-600 at 1.8MHz.

Steve G3TXQ


Thanks, as long as it wasn't a major difference, I would have been happy.

_________________
===================
Gee Three Eee Jay Ess - RSGB, SARL, G-QRP, EPC
My email address is correct on QRZ.com
===================


Sun Apr 12, 2015 8:20 am
Profile Send private message
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore.