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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: Passive pre with autoformer and interstage - expertise wanted plz posted by dave slagle on April 1, 2007 at 14:01:59:
Hello Dave,>>for an IT where the load is usually not the defined value, it just serves to confuse the matter<<
Yes you're right and as a newbie it did a lot. Any transformer just reflects impedances by its turn ratio squared. if you operate a 20K:20K for coupling a stage with 100K input Z at the secondary, then 100K will be reflected at the primary. From what i understand now the specified Z for transformers is the optimal conditions where the manufacturers specifications are met.I wonder what are the consequences of operating the primary below or above its nominal Z? IIRC reading in some hammond doc that above (20K IT at 100K) there's loss of power handling, below (20K at 10K)implies loss of frequency response. Maybe it is the inductance of the windings that comes into play there?
Thank you,
Joris
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Follow Ups
- Re: Passive pre with autoformer and interstage - expertise wanted plz - SomeJoe 10:08:15 04/03/07 (1)
- Re: Passive pre with autoformer and interstage - expertise wanted plz - dave slagle 11:39:40 04/03/07 (0)
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