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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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In Reply to: Need to reduce output resistance and incraese gain of DAC posted by ddriveman on April 23, 2004 at 00:37:23:
Unfortunately, a transformer can't lower impedance without sacrificing gain in the process, so your LL7902 idea won't help you. The impedance ratio of a transformer is the square of its voltage ratio, so, for example, if you need a 4-fold reduction in impedance, you will get a 2-fold reduction in voltage, a loss of 6dB. Not the direction you want to go.So it really comes down to modifying your DAC output stage to give you both higher output and lower output impedance. Let us know a bit more about your DAC. What model is it? What DAC chip is used and how is I/V conversion accomplished (a resistor or ?). Would you feel able to modify the output stage, if there was a tube circuit that could do what you needed?
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Follow Ups
- Re: Need to reduce output resistance and incraese gain of DAC - KevinC 03:23:32 04/23/04 (2)
- Re: Need to reduce output resistance and incraese gain of DAC - ddriveman 03:34:19 04/23/04 (1)
- Re: Need to reduce output resistance and incraese gain of DAC - KevinC 04:04:23 04/23/04 (0)
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