Also, do you want to use Black Gates before each regulator? You could just play it safe with 25v caps of a cheaper variety (Panasonic Fc etc.). If I've learnt one thing about value for money in upgrading this CD player it's to save the most expensive caps for local decoupling. This means the caps right next to the DAC, decoder, servo and op-amps.
Simon
Simon
Thanks for the info guys.
I will go away and do some research. A couple of questions to get me started:
1) Does the supply to a separate transformer come from mains before the main transformer, or does it take a feed from one of the lower voltage windings?
2) I was thinking of running the 5V regs from this new board and the 12V regs from C803. Does this sound reasonable?
Thanks
Simon (from Oz)
I will go away and do some research. A couple of questions to get me started:
1) Does the supply to a separate transformer come from mains before the main transformer, or does it take a feed from one of the lower voltage windings?
2) I was thinking of running the 5V regs from this new board and the 12V regs from C803. Does this sound reasonable?
Thanks
Simon (from Oz)
SimontY said:
That is very cool!!! Thankyou!!!
I shall heavily plagiarise your design. I like the way you only use one 5V reg for DAC & Decoder digital etc. It's a very simple and functional design........at least on paper
.The variation I plan to do is to use 470u 16V BG's in place of the 330u 16V Pan FC's. Also a 40V 1A schottky instead of 100V 1A (due to easy availability). Of course I'd better use the Super Raygulators otherwise my wife will kill me for leaving soldering equipment, components etc on our dining room table for the past week.
You're welcome. I can give the original .png if you have suitable software to redraw it for your needs.
I'd only use Black Gate caps AFTER the regulators. It's probably a bit of a waste placing any before (unless you're really going all out (including using super regulators)).
And remember to also place Black Gates on the main pcb next to the DAC and decoder (and servo if you like).
I think 40v schottkies will do fine.
The grounding is important so try to use stars, more or less like shown in the diagram! Don't use any bypass caps as they can cause problems (I found this out the hard way) and they are useless in parallel with Black Gates.
Simon
I'd only use Black Gate caps AFTER the regulators. It's probably a bit of a waste placing any before (unless you're really going all out (including using super regulators)).
And remember to also place Black Gates on the main pcb next to the DAC and decoder (and servo if you like).
I think 40v schottkies will do fine.
The grounding is important so try to use stars, more or less like shown in the diagram! Don't use any bypass caps as they can cause problems (I found this out the hard way) and they are useless in parallel with Black Gates.
Simon
Being well equipped with a wealth of inexperience, it looks to me as if Brent is suggesting a separate transformer for the 12V and 5V circuits of Simon's diagram.
If that is the case, are you saying that there is a significant difference between using separate transformers instead of a single transformer with twin windings?
Or are you more concerned with the quality of the reg?
If that is the case, are you saying that there is a significant difference between using separate transformers instead of a single transformer with twin windings?
Or are you more concerned with the quality of the reg?
Ideally what you want is a tx (or winding) for each reg, but this can be costly or too much work for people.
Both Simon and I were saying the standard 20V is pretty good for the opamps 12V.
With regards to more expensive regs the saying 'you get what you pay for' definatly rings true. They reveal so much more music and hidden content it really is an eye opener, it makes you wonder why you never did it before.
Of course running these regs with their own tx etc brings even greater benefits.
With regards to the what to run question there are two options.
1)One 9V two winding TX to supply DAC and Decoder regs. For good gains.
2)Use one 9V two winding tx (12V dc) for DAC analogue and digital supplies. And a 12V two winding tx (16V dc) for clock and decoder inputs. This will have significant gains.
Brent
Both Simon and I were saying the standard 20V is pretty good for the opamps 12V.
With regards to more expensive regs the saying 'you get what you pay for' definatly rings true. They reveal so much more music and hidden content it really is an eye opener, it makes you wonder why you never did it before.
Of course running these regs with their own tx etc brings even greater benefits.
With regards to the what to run question there are two options.
1)One 9V two winding TX to supply DAC and Decoder regs. For good gains.
2)Use one 9V two winding tx (12V dc) for DAC analogue and digital supplies. And a 12V two winding tx (16V dc) for clock and decoder inputs. This will have significant gains.
Brent
Hi there,
first, are the standard Raygulators much better than stock ones?
and wich clock is the best for the price havin in mind I do not want to build a pcb and want at least the pcb to buy somewhere or a full kit.
I want to end my mod now with a clock, the regs and the signal through coax.
Thanks
first, are the standard Raygulators much better than stock ones?
and wich clock is the best for the price havin in mind I do not want to build a pcb and want at least the pcb to buy somewhere or a full kit.
I want to end my mod now with a clock, the regs and the signal through coax.
Thanks
