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Old 9th July 2012, 10:26 PM   #2051
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Hey, Alex, did you make those cuts on the board, that have been discussed ealier on this thread or elsewhere? Or did you use your layout as is?
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Old 10th July 2012, 06:44 AM   #2052
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Default Golmund clone

=============================================
BUT this amp suffer on VAS stage 72 degrees Celsius with temperature room 31 degrees Celsius
Τhe next day i will show a new way to hold the transistors with clip to a larger cooler 52 degrees Celsius.
=============================================


New way to hold the transistors with clip to a larger cooler 52 degrees Celsius.
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Old 10th July 2012, 06:24 PM   #2053
Marko25 is offline Marko25  United Kingdom
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Quote:
Originally Posted by nikosokey View Post
New way to hold the transistors with clip to a larger cooler 52 degrees Celsius.
That's some out of the box thinking that I like. Not the most pretty but very practical. Nice work.

Mark.
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Old 10th July 2012, 10:52 PM   #2054
Marko25 is offline Marko25  United Kingdom
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Unless I have missed it reading back through all of this, what is the pcb layout for the power supply?

Thanks,

Mark.
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Old 19th July 2012, 02:25 AM   #2055
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Hi Alex,


Good Day. Can you provide me schematics for this amp?
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Old 28th October 2012, 11:50 PM   #2056
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Could I use a pair of 500VA-220V/60V which I have with primary in parallel connection and the secondary in series to obtain +-84V DC in this project?
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Old 29th October 2012, 10:29 AM   #2057
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I have two toroid transformers with the same rating 500VA Primary 220vac/ Sec 60vac.
Would this connection safe or dangerous?
Trans_connection.jpg

Last edited by Mikewong; 29th October 2012 at 10:33 AM.
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Old 29th October 2012, 10:35 AM   #2058
koldby is offline koldby  Denmark
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AndrewT,
I believe you misunderstand him.
He has TWO transformers , each with a 220V primary and wants to parrallel couple these two transformers and then series couple the secondaries from the two transformers.
As long as the phases is the same for the two secondaries , this is ok as far as I can see..

Koldby
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Old 29th October 2012, 10:37 AM   #2059
AJT is offline AJT  Philippines
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Quote:
Originally Posted by Mikewong View Post
Could I use a pair of 500VA-220V/60V which I have with primary in parallel connection and the secondary in series to obtain +-84V DC in this project?

yes, you can do that, just get your secondaries phased correctly....
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Old 29th October 2012, 11:41 AM   #2060
AJT is offline AJT  Philippines
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and where did mikewong ever said he that he had 110/120vac winidngs?

Quote:
Quote:
Originally Posted by Mikewong
Could I use a pair of 500VA-220V/60V which I have with primary in parallel connection and the secondary in series to obtain +-84V DC in this project?
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