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Old 12th June 2008, 12:38 AM   #531
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Thanks for the advice, Choky.
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Old 12th June 2008, 12:43 AM   #532
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Quote:
Originally posted by carpenter
Thanks for the advice, Choky.

naah ....

you're big boy ( with big horns )

you already knew that
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Old 12th June 2008, 02:07 AM   #533
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Still, you're a peach!
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Old 13th June 2008, 12:56 AM   #534
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Now, this is fun. I simmed Nelson's ZV3 regulated power supply and attached it to my latest creation. Wonder of wonders, it works!

What blows me away about this process is that the voltage swing is rail to rail--at least the sim thinks it is. Now I can put my transformers to work!
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Old 15th June 2008, 02:33 AM   #535
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I cleaned up the LU1014D ID/VDS graph. Here's the area of the graph that I find most important. Perhaps someone will find this useful:
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Old 15th June 2008, 08:14 PM   #536
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I split the ZV7-T (with cascode) down the middle and added what I think could be called a balanced-in-to-single-ended-out buffer. It also has Nelson's voltage regulator. So, I guess it more resembles a ZV9. Performance looks good on the simulator. The best part? Being single ended, it's easier to build.

My electronic x-over has balanced outputs--hence the desire to employ a balanced to single-ended converter.
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Old 15th June 2008, 08:26 PM   #537
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Quote:
Originally posted by carpenter
I split the ZV7-T (with cascode) down the middle and added what I think could be called a balanced-in-to-single-ended-out buffer. It also has Nelson's voltage regulator. So, I guess it more resembles a ZV9. Performance looks good on the simulator. The best part? Being single ended, it's easier to build.

My electronic x-over has balanced outputs--hence the desire to employ a balanced to single-ended converter.

why caps everywhere ?

at least C6 , C11 ,C12 , C13

and- that output load choke must be substantial ...... considering massive Iq ( it isn't split load choke , where yo have flux cancellation )
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Old 15th June 2008, 08:46 PM   #538
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Quote:
Originally posted by Zen Mod



why caps everywhere ?

at least C6 , C11 ,C12 , C13

and- that output load choke must be substantial ...... considering massive Iq ( it isn't split load choke , where yo have flux cancellation )

Thanks for looking. I'll sim without the caps you mentioned. Again, thanks.

The power in the inductor is 16 watts RMS according to the simulator. The tranny I have on hand is rated at 1000 watts. I figured that the core may be large enough to tolerate the inductance without saturating. I haven't learned how to create a full-blown inductor in my simulator, yet.

Your thoughts are much appreciated, Choky.
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Old 15th June 2008, 08:48 PM   #539
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Here's an idea I have of turning VR1 on its side and using it to control the amount of negative feedback in the amp:
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Old 15th June 2008, 08:52 PM   #540
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Quote:
Originally posted by Zen Mod



why caps everywhere ?

at least C6 , C11 ,C12 , C13


I removed those four caps and everything is looking good; in fact, the sine wave looks exactly the same on the simulator. Thanks a bunch for the education.
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