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Post by Marc on Mar 10, 2010 17:12:17 GMT -5
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Sandbagger
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Post by Sandbagger on Mar 11, 2010 8:26:08 GMT -5
Interesting. I've been looking for practical asymmetrical modulation schemes which boost positive peak, while holding negative peaks to 100% to avoid splatter. Most "swing mods" in common use today, do boost positive power, but allow hard cutoff of the negative peak, which is why they can be heard 6 channels away. |
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Post by Marc on Mar 11, 2010 10:29:42 GMT -5
I would try it but don't have a scope to see if they are working correctly. Or figure out the values of the diodes.
That is why I posted it here . If any of the better equipped users decide to try any of them please post back here and let me know what you find, and the values you came up with.
Marc
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Post by spitfire441 on Mar 11, 2010 17:20:26 GMT -5
Thats awsome stuff. I need to give that a try on my Imperial. |
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Sandbagger
Administrator/The Boss
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Post by Sandbagger on Mar 11, 2010 19:04:33 GMT -5
Thats awsome stuff. I need to give that a try on my Imperial. The Imperial may not be the best candidate for this based on the dual final sections, each having its own section of the transformer, and the phasing for the DSB. I'd play around with one of your other tubers like the Johnon if you ever get that running right. |
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Post by Marc on Mar 11, 2010 19:12:43 GMT -5
I was thinking about my AM only MKIII
Marc
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Sandbagger
Administrator/The Boss
Posts: 6,250
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Post by Sandbagger on Mar 12, 2010 8:57:16 GMT -5
I was thinking about my AM only MKIII Marc That would probably be a good candidate. |
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Post by Marc on Mar 12, 2010 10:49:14 GMT -5
But I did not see any mention of the silicon diode specs.
but am sure we can figure that one out.
Marc
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Post by Marc on Mar 12, 2010 16:01:14 GMT -5
Sandbagger
Looking at the one that uses the two zeners. From the way I read it.
The MK III AM transmitter has a B+ of 240v but drops it down to 210 at the tube. So the zeners should be 50v down approx or
240v-50v =190v total or 95v each. wattage 5 but the silicon diode I cant get. There is no mention of it in the text.
Update 1N4007 silicon rectifier and 2 1N5377b zener diodes for a Browning am only.
Marc
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Post by zman on Jun 15, 2010 13:37:37 GMT -5
What about a Sonar FS 23?
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