Hello beautiful by mistake during installation of dat DAC-END up, I called up date-end DAC DAC-2 is ASH, so please discuss here.
DAC-ASH is mean Andrea-Salas-quanghao
Thanks a lot.
DAC-ASH is mean Andrea-Salas-quanghao
Thanks a lot.
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Thank you Quang Hao,
now we have our thread for the last DAC version, the "END-DAC 2".
You can put fotos of the PCB´s, the schematics and the BOM here?
Klaus
This cricuit of DAC-ASH (DAC-end updat)
This circuit of DAC-ASH (DAC-end updat)
In this new PCB, I used six separate sources for each chip Salas AD1865, 74HC04, CS8414.
Please see diagram!
This circuit of DAC-ASH (DAC-end updat)
In this new PCB, I used six separate sources for each chip Salas AD1865, 74HC04, CS8414.
Please see diagram!
Attachments
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Forgive a beginner's question, would the DAC-ASH work without the I/V stage? Namely, would it possible to bulid using 1 PCB and "upgrade" later? or it has to be two boards simutaneously.
Yes! that is fine!
The IV stage i use parallel Composite-Triode, can use tube 6h6pi, 6h30pi, 6dj8
Attachments
Yes, you can buy only the DAC and later put the I/V board or use other buffer board of your choise.
The boards are independent with their own power supply, you also can use the I/V board like a Pre.
Klaus
In fact, my connection would be:
Computer -> USB (Teralink X2 -> SPDIF) -> DAC -> Pass B1 Buffer -> Class D -> 4 Ohm speakers
And
CD Player (SPDIF) -> DAC -> Pass B1 -> Class D -> 4 ohm speakers
I can build DAC only to make the above work. I can add I/V stage after DAC in the future. That simplifies the process a little bit and is more managable for beginners.
I tried to BOM the DAC over the weekend, but there are some components that I couldn't find over Mouser or Digikey.
Thank you for this new thread Quanghao!!
All we need now is an updated BOM with the few typos corrected and we're off to the races!
All we need now is an updated BOM with the few typos corrected and we're off to the races!
Eaagerly waiting. Any plan for getting the chips? I saw a few group buy on the AD1865. Are we in a stage that reputable eBay sellers are there?
How long does it take for the DAC ASH PCB to show up in the States?
I need already the AD1865N-K, digikey only sell 15, therefor it´s good to make a group buy, perhaps together with other chips.
Many people just asked if it´spossible to buy at Ebay, and it seems one seller is good, but nobody stays without doubt and the most bought in group buy on Digikey, the only official source I know.
Klaus
The bom Of DAC-ASH
Parts List DAC-ASH
Resistor Vishay/Dale CCF50 1/4W:
470 Ohm x 1 R39
75 Ohm x 1 R41
680Ohm x 1 R40
Resistor Caddoc MK132:
200 Ohm x 2 R37,R38
Capacitor Vishay/BC
0.1uF/12V x 6 C26,C28,C30,C32,C34,C36
0.01uF x 2 C38,C39 (at digital input), C40,C41
68nF/63V x 1 C37
Sanyo os-con - electrolytic capacitors:
47uF/10-16V x 6 C24,C27,C29,C31,C33,C35
Chip
CS8414 x 1 U3 Cirrus Logic Inc
74HC04 x 1 U2 Toshiba
AD1865 NK, NJ, N x 1 U1 Analog Devices
Socket: 28 pin, 24pin, 8pin
Inductor: 120uH x x 2 L1, L2
Led: GREEN LED x 1
SPDIF: Transformer x 1 T2 Newava Technology S22083 or LL1572
Salas Shunt on The DAC
JFet Toshiba
2SK170 x 18 Q2,Q3,Q5,Q8,Q9,Q11,Q14,Q15,Q17 Q20,Q21,Q23,Q26,Q27,Q29,Q32,Q33,Q35 Transistor
Transistor Fairchild Semiconductor
BC560 x 1 Q10
BC550 x 5 Q4,Q16,Q22,Q28,Q34
Mosfet
On Semiconductor International Rectifier (IR)
IRF540 x 2 Q7,Q12
IRF9540 x 10 Q1,Q13,Q19,Q25,Q31,Q6,Q18,Q24,Q30,Q36
Electrolytic Capacitors / Rubycon ZLH or Panasonic FC
220uf/16V x 6 C3,C7,C11,C15,C19,C23
2200uF-4700uF/25V x 6 C1,C5,C10,C13,C17,C21
Capacitor Illinois Cap & Wima, etc...
0.1uF/25V x 12 C2,C,C6,C10,C14,C18,C22,,C4,C8,C12,C16,C20,C24
Resistor Vishay / Dale CCF50 1/4W
10 Ohm x 6 R4,R11,R16,R22,R28,R34,
47 Ohm x 6 R5,R11,R17,R23,R29,R35
100 Ohm x 6 R3,RR9,R15,R21,R27,R33
220 Ohm x 12 R2,R8,R14,R20,R26,R32,R6,R12,R18,R24,R30,R36
Resistor Vishay / Dale CCF50 2W
33 Ohm / 2W x 6 R1,R7,R13,R19,R25,R31
Led Green Led x 18 L1-L18
Diode 1N5819 Schottky Barrier Rectifier
40V x 24 D1-D24 . http://www.oup.com/us/pdf/microcircu...n5817-fair.pdf
Trimmer Fairchild Semiconductor
VR 1K Ohm x 6 VR1-VR6
Tranformer
9-12 V/100-200mA x 6
Parts List DAC-ASH
Resistor Vishay/Dale CCF50 1/4W:
470 Ohm x 1 R39
75 Ohm x 1 R41
680Ohm x 1 R40
Resistor Caddoc MK132:
200 Ohm x 2 R37,R38
Capacitor Vishay/BC
0.1uF/12V x 6 C26,C28,C30,C32,C34,C36
0.01uF x 2 C38,C39 (at digital input), C40,C41
68nF/63V x 1 C37
Sanyo os-con - electrolytic capacitors:
47uF/10-16V x 6 C24,C27,C29,C31,C33,C35
Chip
CS8414 x 1 U3 Cirrus Logic Inc
74HC04 x 1 U2 Toshiba
AD1865 NK, NJ, N x 1 U1 Analog Devices
Socket: 28 pin, 24pin, 8pin
Inductor: 120uH x x 2 L1, L2
Led: GREEN LED x 1
SPDIF: Transformer x 1 T2 Newava Technology S22083 or LL1572
Salas Shunt on The DAC
JFet Toshiba
2SK170 x 18 Q2,Q3,Q5,Q8,Q9,Q11,Q14,Q15,Q17 Q20,Q21,Q23,Q26,Q27,Q29,Q32,Q33,Q35 Transistor
Transistor Fairchild Semiconductor
BC560 x 1 Q10
BC550 x 5 Q4,Q16,Q22,Q28,Q34
Mosfet
On Semiconductor International Rectifier (IR)
IRF540 x 2 Q7,Q12
IRF9540 x 10 Q1,Q13,Q19,Q25,Q31,Q6,Q18,Q24,Q30,Q36
Electrolytic Capacitors / Rubycon ZLH or Panasonic FC
220uf/16V x 6 C3,C7,C11,C15,C19,C23
2200uF-4700uF/25V x 6 C1,C5,C10,C13,C17,C21
Capacitor Illinois Cap & Wima, etc...
0.1uF/25V x 12 C2,C,C6,C10,C14,C18,C22,,C4,C8,C12,C16,C20,C24
Resistor Vishay / Dale CCF50 1/4W
10 Ohm x 6 R4,R11,R16,R22,R28,R34,
47 Ohm x 6 R5,R11,R17,R23,R29,R35
100 Ohm x 6 R3,RR9,R15,R21,R27,R33
220 Ohm x 12 R2,R8,R14,R20,R26,R32,R6,R12,R18,R24,R30,R36
Resistor Vishay / Dale CCF50 2W
33 Ohm / 2W x 6 R1,R7,R13,R19,R25,R31
Led Green Led x 18 L1-L18
Diode 1N5819 Schottky Barrier Rectifier
40V x 24 D1-D24 . http://www.oup.com/us/pdf/microcircu...n5817-fair.pdf
Trimmer Fairchild Semiconductor
VR 1K Ohm x 6 VR1-VR6
Tranformer
9-12 V/100-200mA x 6
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The Bom IV stage for DAC-ASH
IV stage for DAC-END
Composite-Triode
1.Resistor
Resistor 2W
R1,R31 = 22R/2W
R16 - R20A = 18K/2W
R32 - R36A = 18K/2W
Resistor 1/4W
R22,21,37,38 = 200R
R23,24,39,40 = 470K
R25,26,27,28 = 2K
R41,42,43,44 = 2K
R29,30,45,46 =220K
R52 = 10R
Resistor RELAY
ALL 1/4W
R47 = 220K
R48= 1K
R49 = 5.6K
R50,51 = 4.7K
2. Caps
C16, 22: 47uF/450V
C19, 21 ,24, 26 = 220uF/16V
C19,20,25,26 = 0.1uF
Caps -output:
C17, 23: 0.47 - 1uF/450V (Jensen, Audicap, M-Cap…)
Caps RELAY
C28: 47 - 220uF/12V
3. DS2Y RELAYS 5v X 1
4. Transitor
Q1: BC337
5. IC: LM311
6. Diot: D19, d20 = 1N4007 or better
7.Tube: V1, V2 = 6H30Pi, 6H6Pi, or 6dj8 x 2
8 . Tube Socket 9 PIN X 2
9. PCB I/v stage X 1
Note:
1. All resistor 1/4W or 1W
2. R1, R31: 22R/2W. R16 - R20A use 2W. R32 - R36A use 2W
2. The delay time : 0.45 minutes
Use Tube:
1.Tube 6H6PI:
+B = 270V. R22, R21, R37, R38 = 400R - 470R.
2.Tube 6H30PI:
+B = 230V. R22, R21, R37, R38 = 200 - 220R.
3.Tube 6DJ8 or 6H23:
+B = 200V. R22, R21, R37, R38 = 280R - 300R.
* R16 - R20A = 47K/2W .
* R32 - R36A = 47K/2W.
Parts List Salas Shunt for iV stage
1. JFet: 2SK170 x 1 Q4
2. Transistor
2N2906 x 1 Q5
MJE 350 x 1 Q2
3. MosFfet
IRF9610 x 1 Q1
IRF840 x 1 Q3,Q15
3. IC
LT1084, 85 x 1 U1
4. Capacitor
220uf/450V x 2 C4,C5
1uf/450V x 2 C2,C3
100uF/25V x 1 C1
4700uF/16V x 2 C10,C11
470uF/16V x 2 C12,C14
47uF/16V x 1 C13
0.1uf/16V x 5
5. Resistor
Resistor 1/2W 3.3 Ohm x 1 R7
47 Ohm x 2 R9,R10
200-220 Ohm x 1 R13,R2,R6
6.8K Ohm x 1 R14
Resistor 2W
33 Ohm x 1 R1 for Tube 6H6Pi and 6H30Pi,
47 Ohm x 1 for Tube 6Dj8
5.6 K x 1 R5
120 K x 1 R4
100 Ohm x 2 R15,R16
Resistor 5W
56K x 1 R3
6. Trimmer
2-5 K Ohm x 1 VR2
500-1K x 1 VR1
7. Led Green Led 3 D2,D3,D4
8. Diode
Diode 4A x 4 D13,D14,D15,D16
Diode 1N4007 x 2 D17,D18
Diode 1n4007 or better x 4 D9,D10,D11,D12
http://www.datasheetcatalog.org/datasheet/Sanken/mXqxxyz.pdf
Diode Zenner
1n4742 or zener diode 6- 12V
TRANFORMER
SALAS SHUNT 1 0-200-250V/100mA
Filament x 1 0-8V or 0-9V/2A
Heatsink
10W x 2 Q1,Q3
5-10W x 1 U1
Jump
3 x 2
IV stage for DAC-END
Composite-Triode
1.Resistor
Resistor 2W
R1,R31 = 22R/2W
R16 - R20A = 18K/2W
R32 - R36A = 18K/2W
Resistor 1/4W
R22,21,37,38 = 200R
R23,24,39,40 = 470K
R25,26,27,28 = 2K
R41,42,43,44 = 2K
R29,30,45,46 =220K
R52 = 10R
Resistor RELAY
ALL 1/4W
R47 = 220K
R48= 1K
R49 = 5.6K
R50,51 = 4.7K
2. Caps
C16, 22: 47uF/450V
C19, 21 ,24, 26 = 220uF/16V
C19,20,25,26 = 0.1uF
Caps -output:
C17, 23: 0.47 - 1uF/450V (Jensen, Audicap, M-Cap…)
Caps RELAY
C28: 47 - 220uF/12V
3. DS2Y RELAYS 5v X 1
4. Transitor
Q1: BC337
5. IC: LM311
6. Diot: D19, d20 = 1N4007 or better
7.Tube: V1, V2 = 6H30Pi, 6H6Pi, or 6dj8 x 2
8 . Tube Socket 9 PIN X 2
9. PCB I/v stage X 1
Note:
1. All resistor 1/4W or 1W
2. R1, R31: 22R/2W. R16 - R20A use 2W. R32 - R36A use 2W
2. The delay time : 0.45 minutes
Use Tube:
1.Tube 6H6PI:
+B = 270V. R22, R21, R37, R38 = 400R - 470R.
2.Tube 6H30PI:
+B = 230V. R22, R21, R37, R38 = 200 - 220R.
3.Tube 6DJ8 or 6H23:
+B = 200V. R22, R21, R37, R38 = 280R - 300R.
* R16 - R20A = 47K/2W .
* R32 - R36A = 47K/2W.
Parts List Salas Shunt for iV stage
1. JFet: 2SK170 x 1 Q4
2. Transistor
2N2906 x 1 Q5
MJE 350 x 1 Q2
3. MosFfet
IRF9610 x 1 Q1
IRF840 x 1 Q3,Q15
3. IC
LT1084, 85 x 1 U1
4. Capacitor
220uf/450V x 2 C4,C5
1uf/450V x 2 C2,C3
100uF/25V x 1 C1
4700uF/16V x 2 C10,C11
470uF/16V x 2 C12,C14
47uF/16V x 1 C13
0.1uf/16V x 5
5. Resistor
Resistor 1/2W 3.3 Ohm x 1 R7
47 Ohm x 2 R9,R10
200-220 Ohm x 1 R13,R2,R6
6.8K Ohm x 1 R14
Resistor 2W
33 Ohm x 1 R1 for Tube 6H6Pi and 6H30Pi,
47 Ohm x 1 for Tube 6Dj8
5.6 K x 1 R5
120 K x 1 R4
100 Ohm x 2 R15,R16
Resistor 5W
56K x 1 R3
6. Trimmer
2-5 K Ohm x 1 VR2
500-1K x 1 VR1
7. Led Green Led 3 D2,D3,D4
8. Diode
Diode 4A x 4 D13,D14,D15,D16
Diode 1N4007 x 2 D17,D18
Diode 1n4007 or better x 4 D9,D10,D11,D12
http://www.datasheetcatalog.org/datasheet/Sanken/mXqxxyz.pdf
Diode Zenner
1n4742 or zener diode 6- 12V
TRANFORMER
SALAS SHUNT 1 0-200-250V/100mA
Filament x 1 0-8V or 0-9V/2A
Heatsink
10W x 2 Q1,Q3
5-10W x 1 U1
Jump
3 x 2
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Started from the first item: 470 ohm and 680 ohm resistors are "non-stock" in Mouser, minimum order is 5000. Couldn't find them in DigiKey. Did I miss anything?
I am new. 🙂
I am new. 🙂
Quanghao, the circuit for SSHV posted above lists for D5 & D6 - 1N4142A but the BOM (on page 179 of the original thread) says 1n4172?
I suspect the part we want here is 1N4742 or 1N4742A a 1W 12V Zener Diode....
Is this correct and if it is could you please make the corrections to the circuit so others don't have a problem.
Thanks!
I suspect the part we want here is 1N4742 or 1N4742A a 1W 12V Zener Diode....
Is this correct and if it is could you please make the corrections to the circuit so others don't have a problem.
Thanks!
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