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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 (Post 2229208)
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 (Post 2230847)
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 (Post 2230936)
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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