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Cannot Adjust an IF Transformer’s cores
#37

I have gone ahead and designed a PCB this evening. I will likely sit over it for a couple of days before sending the design in for production, to make sure I am satisfied with it. The old IF can measures 0.75" x 0.75", so I designed this to be 0.725" x 0.725" to be inserted into the gutted can. Have a look at the finalized schematic and PCB 3D model images.

For grins, I did also try connecting the prototype the design with the coupled inductors to the radio. It wasn't tunable at all, unlike the success I had with the individual inductors. So I will be moving forward with the individual inductor design.
   
   
   


Attached Files
.pdf Philco 32-4257 Replacement.pdf Size: 14.48 KB  Downloads: 391

Joseph

Philco 39-750 EZ
Philco 46-480
Philco 47-1230
Philco 48-482
Philco 49-906


Messages In This Thread
462ron - by 462ron - 08-01-2024, 07:33 AM
462ron - by 462ron - 08-01-2024, 08:44 AM
462ron - by 462ron - 08-02-2024, 08:09 AM
462ron - by 462ron - 08-03-2024, 07:49 AM
462ron - by 462ron - 08-04-2024, 08:15 AM
462ron - by 462ron - 08-08-2024, 08:02 AM
RE: Cannot Adjust an IF Transformer’s cores - by jrblasde - 08-09-2024, 09:38 PM
462ron - by 462ron - 08-10-2024, 08:33 AM
462ron - by 462ron - 08-10-2024, 09:38 AM
462ron - by 462ron - 08-12-2024, 07:42 AM
462ron - by 462ron - 08-25-2024, 08:27 AM



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