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Old 5th November 2012, 08:34 AM   #151
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Quote:
Originally Posted by andrea_mori View Post
Hi Quanghao,

0-220Vac does not exist, HV secondaries of R80-36 are 260-230-0-230-260, do you mean 0-230 in parallel full wave rectified (230Vac * 1.414 = about 325 Vcc)?

Andrea
use 230-0-230, and use 2 diode in put!
thanks
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Old 5th November 2012, 08:51 AM   #152
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Quote:
Originally Posted by quanghao View Post
use 230-0-230, and use 2 diode in put!
thanks
Thanks for reply,
but I have a doubt, why a center-tapped two-diode rectifiers instead of paralleling 0-230 secondaries and using a full wave with 4 diodes rectifiers?
What's the advantage?
Also on the PCB there are places for 4 diodes rectifiers.
Andrea
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Old 5th November 2012, 09:55 AM   #153
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Quote:
Originally Posted by andrea_mori View Post
Thanks for reply,
but I have a doubt, why a center-tapped two-diode rectifiers instead of paralleling 0-230 secondaries and using a full wave with 4 diodes rectifiers?
What's the advantage?
Also on the PCB there are places for 4 diodes rectifiers.
Andrea
0-230 secondaries and using a full wave with 4 diodes rectifiers
yes
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Old 9th November 2012, 07:34 AM   #154
ua3grn is offline ua3grn  Russian Federation
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quanghao, you send pcb?
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Old 10th November 2012, 02:56 PM   #155
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Quote:
Originally Posted by ua3grn View Post
quanghao, you send pcb?
yes!
thanks
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Old 13th November 2012, 05:20 PM   #156
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Hi Quanghao, Wanted to make sure you received payment for Dac pcb. did you already send the PCB? thanks, John
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Old 21st November 2012, 08:03 AM   #157
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Hi all!

To day i have some PCB IV LL1660 , if you like please sen to me pm!
Thanks
Attached Images
File Type: jpg PCB iv ll1660 T.jpg (258.9 KB, 378 views)
File Type: jpg IV ll1660 b.JPG (221.6 KB, 362 views)
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Old 21st November 2012, 08:10 AM   #158
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Hi andrea_mori !

Did you finis your DAC??

what i can hepl you more??
thanks
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Old 21st November 2012, 08:50 AM   #159
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Quote:
Originally Posted by quanghao View Post
Hi andrea_mori !

Did you finis your DAC??

what i can hepl you more??
thanks
Hi,
not yet, I'm busy on other project.
Question: I would like to use xlr balanced input, since my transport provides this output, did you test xlr input? does it work correctly?
Andrea
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Old 28th November 2012, 07:38 PM   #160
hordmop is offline hordmop  Spain
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Default Problem with the power stage circuit

Hi Quanghao, I have a problem with the power stage circuit in the 260V SSHV specifically, since there is only the 61V output.
I have attached some pictures where you can see the component values ​​that have been used and the voltages obtained.
Thanks.
Attached Images
File Type: jpg Esquema.jpg (270.8 KB, 319 views)
File Type: jpg SSHV.jpg (469.5 KB, 306 views)
File Type: jpg dac.jpg (443.1 KB, 286 views)
File Type: jpg Valvula.jpg (365.0 KB, 160 views)
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