inductors

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Zeeus

Joined Apr 17, 2019
481

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Dodgydave

Joined Jun 22, 2012
8,575
It's an IF (intermediate frequency)Transformer, for Radio frequencies. You can buy them readymade in different inductances for RF work .



TOKO_4.jpg
 

Thread Starter

Zeeus

Joined Apr 17, 2019
481
It's an IF (intermediate frequency)Transformer, for Radio frequencies. You can buy them readymade in different inductances for RF work .
Please can you kindly post a link to amazon or something so to see what's it like?

And guess will be better to make it so can have in different henries
 

SLK001

Joined Nov 29, 2011
1,541
Thanks E if understand, so third image, can just wrap 2 wires on a core separated a little distance from each other. yeah?
It depends on what you want to do. If you are trying to build the author's circuit, then read how he wound his transformer. If it was 10-turns 26 gauge bifilar wire wound on a T-37-43 core, then use that xformer. If not, then you are going to have to determine what xformer to wind and how to wind it. These type of torroid cores are common and they come in many sizes and permeabilities.
 

Thread Starter

Zeeus

Joined Apr 17, 2019
481
It depends on what you want to do. If you are trying to build the author's circuit, then read how he wound his transformer. If it was 10-turns 26 gauge bifilar wire wound on a T-37-43 core, then use that xformer. If not, then you are going to have to determine what xformer to wind and how to wind it. These type of torroid cores are common and they come in many sizes and permeabilities.
Trying to understand the transformer symbols not specific circuit

I understand the T-37-43 is a toroid core..but sometimes, the numbers (like T-37-43) don't have any meaning on google so would be hard to know what author is talking about..Although, seems starting with T is for Toroid

look at 2nd image, looks like transformer symbol with primary and secondary...Wasn't thinking it can be two wires wrapped on same toroid
 
Last edited:

SLK001

Joined Nov 29, 2011
1,541
I understand the T-37-43 is a toroid core..but sometimes, the numbers (like T-37-43) don't have any meaning on google so would be hard to know what author is talking about..Although, seems starting with T is for Toroid.
And the "F" signifies a ferrite core. I'm sure that somewhere in the author's book, he explains the FT-37-43 number. Anyway, most HAMs know what the numbers mean.
 
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