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In Reply to: RE: Some puzzling calculations posted by Paul Joppa on January 27, 2015 at 17:21:21
Paul, i have one more thing for calculations .;-)
With output transformer 3.5k/16ohm with low output signal less the 1v, without load output is 0dB, with 16ohm load output goes down 2.6dB
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That's 1221 ohms for rp plus the transformer resistive losses. Can you get transformer primary and secondary DC resistance? Usually secondary losses are similar to pirmary, so twice the primary DCR is an estimate. Subtract from 1221 to get another rp estimate.
From the manufacturer datasheet: primary DCR 93 ohm.
so, 1035 compared to 980 - wow, that's closer than I hoped for.
Great, actually not that far from EML.
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