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Old 26th September 2010, 12:33 AM   #311
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Quote:
Originally Posted by dudaindc View Post
Hello Mile
Do you mind posting the schematics for the OP based version?
Thanks!
HV250 schematic
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Old 26th September 2010, 01:03 AM   #312
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HV250 is much older than HV350, discounted for long time but still worked.
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Old 26th September 2010, 01:17 AM   #313
Krisfr is offline Krisfr  United States
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Quote:
Originally Posted by udhay_cit View Post
Hi, anybody interested in my PCB work for HV350.2 without the Toshiba transistors. I replaced all the 2SA/2SC series Toshiba transistors with available 2N series. I cont find the Toshiba transistors in my city so i cont comment the performance difference b/w the original apex design and my design.

Just now i finished the design work so i didn't tested that.......

I will post my pictures after the testing now find the attachment ......

Thanks Mile

Regards
Udhay
Do you have a schematic of this? Thanks
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Old 26th September 2010, 01:38 AM   #314
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Default HV23

Thread start with this schematic.
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Old 26th September 2010, 01:58 AM   #315
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Amp from schematics with 5 pairs mosfets.
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Old 30th September 2010, 07:34 PM   #316
khalsa is offline khalsa  India
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hi apex send the pcd drawing 5pair mosfets
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Old 3rd October 2010, 03:22 PM   #317
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Quote:
Originally Posted by khalsa View Post
hi apex send the pcd drawing 5pair mosfets
Use this if you want, but I not suggest to use IRFP240/IRFP9240 for that power and rail voltage it's not realable.
Regards
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Last edited by apexaudio; 3rd October 2010 at 03:28 PM.
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Old 3rd October 2010, 04:55 PM   #318
khalsa is offline khalsa  India
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hi apex thanks for suggestion
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Old 3rd October 2010, 08:01 PM   #319
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Quote:
Originally Posted by apexaudio View Post
Use this if you want, but I not suggest to use IRFP240/IRFP9240 for that power and rail voltage it's not realable.
Regards
Hi Mile,

why did yo say you don't suggest those IRFs for that rail voltage? Is that too high?
How about if we use +/- 67vdc? (or 45-0-45 secondary transformer)

Regards.
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Old 3rd October 2010, 08:57 PM   #320
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Quote:
Originally Posted by Tube Pro View Post
Hi Mile,

why did yo say you don't suggest those IRFs for that rail voltage? Is that too high?
How about if we use +/- 67vdc? (or 45-0-45 secondary transformer)

Regards.
For safety reason +/-80vdc is maximum suggested voltage, and U can use 4 or 5 pairs outputs.
With +/-67vdc ,and 4 pairs outputs U will have very realable amp.
Regards
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