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-   -   Hi-end phono preamplifier (http://www.diyaudio.com/forums/quanghao-audio-design/169337-hi-end-phono-preamplifier.html)

quanghao 26th June 2010 03:54 AM

Hi-end phono preamplifier
 
Hi all!
This toppic about Hi-end phono preamplifier, you can se all PCB and information!
Phono-End - HQaudiodesign

Hi-end phono preamplifier

quanghao 27th June 2010 10:06 AM

Well I can work, Sorry you had to wait long!
Quanghao

jormajj 28th June 2010 09:54 AM

Hi Quanghao,
the PCB s arrived today, thanks
best regards jormajj

quanghao 28th June 2010 11:29 AM

2 Attachment(s)
Quote:

Originally Posted by jormajj (http://www.diyaudio.com/forums/showthread.php?p=2229208#post2229208)
Hi Quanghao,
the PCB s arrived today, thanks
best regards jormajj

Yes! good!
And some image of Phono -hi end

quanghao 28th June 2010 04:10 PM

2 Attachment(s)
SSHV for phono D3A

toufu 30th June 2010 01:30 AM

Quanghao, do we need center tap transformer? What size?

quanghao 30th June 2010 02:26 AM

Quote:

Originally Posted by toufu (http://www.diyaudio.com/forums/showthread.php?p=2230847#post2230847)
Quanghao, do we need center tap transformer? What size?

Hi no need center tap. if you have center tap you can use it!

Transformer for Phono-Hi end:
In put: 110 or 220V

out-put: HV= 0-200 V/100mA, or 200 -0-200V. ore 0-200-220 V is is ok
7-9V/ 2-3A for filament D3A

toufu 30th June 2010 04:06 AM

Ok.. Thanks!

quanghao 30th June 2010 04:37 AM

1 Attachment(s)
Quote:

Originally Posted by toufu (http://www.diyaudio.com/forums/showthread.php?p=2230936#post2230936)
Ok.. Thanks!

Note:
1. Heatsink for IRF9610 and 840
20W x 2 on board

Digi-Key - HS385-ND (Manufacturer - 530001B02500G)

2. Heatsink for Filament
10W x 1
Digi-Key - HS350-ND (Manufacturer - 529802B02500G)


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