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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: Kevin: For SET design, how much ripple is too much ripple posted by AnandR on July 16, 2004 at 04:46:01:
Anand,There is a semi-quantitative way to look at the data you have presented. 22mV at the plate of the output transformer will be turned into a speaker terminal voltage depending on the step-down ratio of the output transformer. Let's say that you are building a 300B amp with a 3K to 8 ohm transformer. That is a 19.4:1 turns ratio, so the resulting ripple at the speaker terminals will be about 1.1mV. If the 22mV was RMS, then in my opinion this is low enough for speakers with less than 95dB sensitivity. Of course, hum tolerance is a subjective thing, but I put myself in the middle of the pack and this would be good enough for me.
Kevin Carter
K&K Audio
www.kandkaudio.com
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Follow Ups
- Re: Kevin: For SET design, how much ripple is too much ripple - KevinC 13:25:26 07/16/04 (2)
- Re: Kevin: For SET design, how much ripple is too much ripple - AnandR 17:10:52 07/16/04 (1)
- Re: Kevin: For SET design, how much ripple is too much ripple - KevinC 18:46:31 07/16/04 (0)
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