You are right, but at the last page of the schematic you find discrete 15 Volt regulators, that may drop some voltage. It may be a matter of taste, but I like it more with a little higher voltage. Honestly, 3 Volt AC on top will not be critical.
No you are right. Completely missed those as the drawing has a PSU section but these are not in that.
So it needs +/- 18V and maybe double that if the OP answers/reacts to any numbered point/question. I can not imagine the at least 3 x 7805 regulator for digital voltages to be fed with 18V but you never know with cottage industry made audio. It is an ugly dragon anyway PSU wise.
If repair costs are higher than 150 Euro (just 2 tiny toroid transformers are about 50 Euro minimum for a pair and 15VA types start with 30 Euro/piece....) it needs serious consideration to just buy a new recent device. The PSU will cost about 100 alone with PCB. Then the things that got toasted. From what I hear ES9039 seems to be competitive with old DAC chips.
Whatever, this DAC costs me also too much time 🙂
So it needs +/- 18V and maybe double that if the OP answers/reacts to any numbered point/question. I can not imagine the at least 3 x 7805 regulator for digital voltages to be fed with 18V but you never know with cottage industry made audio. It is an ugly dragon anyway PSU wise.
If repair costs are higher than 150 Euro (just 2 tiny toroid transformers are about 50 Euro minimum for a pair and 15VA types start with 30 Euro/piece....) it needs serious consideration to just buy a new recent device. The PSU will cost about 100 alone with PCB. Then the things that got toasted. From what I hear ES9039 seems to be competitive with old DAC chips.
Whatever, this DAC costs me also too much time 🙂
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Probably you didn`t realize but you did with your DIDB the best you can do. I made as well DIY supply for one DITB but it uses one rail +/-14v and I it is with massive transformator for the use - 30W and it did flawless the job. We compare it with another DIY with double trafo and original one and noone just came close to the performance of mine. This dac just giving really joy when listened. Which serial is yours? Aparently if it is between 17800 and 19000 there is bigger chance to be with AD1864/65 chip which is much better than the normal one - 2xAD1860 for the DITB... jsut another clue.
By the way I didn`t understand why you thinking DDE v3.0 uses both rails of +/-18v, can you please explain me in a simple manner?
Thanks in advance
I am not sure why you repeat all the time that the equipment is toasted, raosted, executed, etc as I said it works ... probably you wish it. Really don`t understand such behaviour. If you don`t have time - go on. Thanks for sharing your toughts. We all understand your attitude. Appreciate your input
Do you understand what you did with the dividers?
You used the word “burnt” and you shorted stuff.
You used the word “burnt” and you shorted stuff.
I tried to make you a picture of a dual power supply with 18 Volt output, that will work pre-regulated for your DAC.
If you want to keep the division of analog and digital supply as done by Audio Alchemy, you need two of these.
Do not connect ground, this is done inside the DDE.
If you want to keep the division of analog and digital supply as done by Audio Alchemy, you need two of these.
Do not connect ground, this is done inside the DDE.
Attachments
Sorry, no. Just an example what you can do at no cost, from stuff in the leftover box.
The case contains what is pictured in the plan. You should do two of those.
The most unconventional feature of the Audio Alchemy products is the carefully made division of each stages power supply.
So your DDE uses one transformer to serve digital, one for analog.
PS you know the difference between a dual 15V-0V-15V power supply and a single 15V-0V one and the importance of the 0V ground?
The case contains what is pictured in the plan. You should do two of those.
The most unconventional feature of the Audio Alchemy products is the carefully made division of each stages power supply.
So your DDE uses one transformer to serve digital, one for analog.
PS you know the difference between a dual 15V-0V-15V power supply and a single 15V-0V one and the importance of the 0V ground?
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This may be understood wrong. If you build two of these supplies in one box, do not connect both grounds to each other, but keep them separate. This is why the connector got 6 (six) contacts. These will be connected to each other inside the DDE 3.0 This is important, so you don't get any hum from the device.
Yes, I already know the complexity of this devices and it is really challenging