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OLD THREAD DAC End by Andrea Ciuffoli

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apelizzo

apelizzo

Member
Joined 2006
toufu said:
Has anybody found suitable tranfromers? If so, please reveal the source! Thanks!
Click to expand...

Transformer for Power Supply I/V Stage (Anode + Heater)
Part Number:
R80-36 primary (0-110) x 2 /SCN: scondary (260-230-0-230-260)(200mA), 2.5-0-2.5(3A), 3.15-0-3.15) X 2(3A)
For the heater series 2.5+2.5+3.15 (make sure 2.5 and 3.15 are in phase or you will have 1.85V).
Here is the link:
DIYCLUB

Transformer for Salas Shunt board (you need 2 10VA transformers):
Any 220-240 / 9+9V 10VA transformer (toroidal if possible). You can find it at any electronic parts shop.

I recommend use one 9+9 for Analog +5 and -5 rail and another identical 10VA transformer for +5 Digital

For digital input transformer Murata DA101C available from Farnell $5

Go to page 56 and see my quote. I hope it helps.
 
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apelizzo

apelizzo

Member
Joined 2006

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apelizzo

apelizzo

Member
Joined 2006
adamus said:
I'm using the jj, only £10.

I'll be using obbligatos in the critical film positions. I may also look at tube rectification, a bit of air wiring will be needed. I'll try the solid state at first of course.
Click to expand...

Adam,
Please give me your opinion regarding all these polyester caps in parallel with Oscon and near the AD1865 and CS8141. I would prefer MKP instead MKS. I've got some axial polystyrene 33nF to mount vertically. I bought some Vishay BC MKS but I don't feel confident to solder them. I excluded any Wima.
Also those cheap ceramic capacitor seam to work very well in some positions.

What do you recommend?
 
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R

rolotube

Member
Joined 2009
quanghao, my boards arrived today in good condition. They look great. Many thanks again for arranging to have them made & sending to group buy participants.

Re power transformers, in a previous post andrea suggested the following: LS70-1 (2x15V, 1x12V) & R80-55 (1x250V, 2x9V).

apelizzo, does the Murata DA101C replace, or is it an alternative for the Newava S22083?
 
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