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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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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: Innerstage vs R/C coupling. posted by Michael Samra on February 25, 2017 at 10:47:01:
Interesting video... The big issue I have is I suspect he isn't using a very good interstage transformer and he is loading it. Here is the frequency response and phase of a mediocre stepup transformer and it is interesting to note that when you load the secondary to tame the ringing you also introduce substantial phase shift. It would have been nice to see the same tests preformed without a secondary load and the frequency sweep characteristics for both situations.
While the particular graph above is from a simulation, I based the values for the simulation off of an actual measured transformer and was able to get the measured and simmed behavior to match very closely.
dave
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- RE: Innerstage vs R/C coupling. - dave slagle 19:07:48 02/25/17 (0)
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