Artikel
Audio-DAC 2000, deel 3
praktische zaken
Degenen die deel 1 en deel 2 van deze artikelenserie hebben bestudeerd, weten nu exact hoe onze nieuwe high-end D/A-converter werkt. Het enige dat nog rest is de praktische realisatie van een en ander. Dit is dan ook het hoofdthema van deze derde en laatste aflevering.Eigenlijk moeten we bij de hierboven staande tekst meteen een kanttekening maken, want er is één onderdeel van de audio-DAC waarvan we het schema nog niet besproken hebben: de voeding.
Materials
Onderdelenlijst
Weerstanden:
R1 = 75
R2 = 220
R3 = 470
R4,R50 = 4,7
R5 = 4x10 k SIL-array
R6 = 10 k
R7...R10 = 22
R11...R24 = 820
R25,R26 = 2k49 1%
R27,R30,R33,R36 = 3k57 1%
R28,R34 = 4k12 1%
R29,R35 = 3k92 1%
R31,R37 = 3k65 1%
R32,R38 = 3k32 1%
R39,R41,R45,R49 = 1 M
R40,R42 = 100
R43,R44,R47,R48 = 150 k
R46 = 10
R51,R53 = 249 1%
R52,R54 = 750 1%
R55,R56 = 3,3
R57 = 3k9
R58 = 1,5
Condensatoren:
C1,C2 = 10 n keramisch
C3 = 68 n
C4,C6,C10,C16,C62...C65,C72,C73,C83 = 10 µF/63 V radiaal
C5,C7 = 47 n keramisch
C8,C9,C11,C12,C15,C17,C46...C53,
C59...C61,C66,C67,C70,C71,C74,C75,C82,C84 = 100 n keramisch
C13,C14,C23,C24,C44,C45,C54 = 47 µF/25 V radiaal
C18...C21,C39...C42 = 4µ7/63 V radiaal
C22,C43,C58,C68,C69 = 100 µF/25 V radiaal
C25,C26 = 47 p polystyreen/ polypropyleen axiaal (EMZ )
C27,C33 = 2n2 1% polystyreen/ polypropyleen (EMZ )
C28,C34 = 4n7 1% polystyreen/ polypropyleen (EMZ )
C29,C35 = 330 p 1% polystyreen/ polypropyleen (EMZ)
C30,C36 = 1 n 1% polystyreen/ polypropyleen (EMZ)
C31,C37 = 1n5 1% polystyreen/ polypropyleen (EMZ)
C32,C38 = 270 p 1% polystyreen/ polypropyleen (EMZ)
C55 = 220 µF/25 V radiaal
C56 = 1 µF/63 V radiaal
C57 = 470 µF/25 V radiaal
C76,C77 = 1000 µF/40 V radiaal
C78...C81,C86...C89 = 22 n ker.
C85 = 1000 µF/25 V radiaal
Spoelen:
L1...L4 = 47 µH
Halfgeleiders:
D1 = 1N4001
D2,D3 = 1N4148
D4...D6 = 5V6/1W3
D7 = rode high-efficiency-LED
LD1,LD2 = HDN1075O (Siemens)
T1,T2 = BC517
IC1 = CS8414-CS (Crystal)
IC2 = TORX173 (Toshiba)
IC3 = 6.144MHz SG531P (Seiko Epson)
IC4 = 74HCT32
IC5 = GAL22V10B-25LP (EPS: 996530-1 - zie Service-pagina’s)
IC6 = DF1704E (Burr-Brown)
IC7,IC8 = PCM1704U (Burr-Brown)
IC9...IC12 = OPA627AP (Burr-Brown)
IC13 = LM317 (TO220)
IC14 = LM337 (TO220)
IC15 = 7812
IC16 = 7912
IC17 = 7805
Diversen:
JP1 = 2-polige pinheader + jumper
JP2,JP3 = draadbrug *
K1,K6,K7 = cinchbus voor printmontage (bijv. Monacor T-709G)
K2 = 10-polige boxheader male
K4 = 10-polige PCB-connector (voor flatcable)
K3,K5 = 16-polige boxheader male
K8,K12,K13 = 2-polige printkroonsteen steek 5 mm
K9...K11 = 3-polige printkroonsteen steek 5 mm
S1,S2,S4 = 4-polige DIP-switch
S3 = 8-polige DIP-switch
B1,B2 = B80C1500 recht
Re1...Re3 = V23042-A2003-B101, 12 V/600 W (Siemens)
voedingstrofo’s: 2x15 V/4 VA (bijv. Block FLD4/15, Hahn BVUI 3020165, Monacor FTR-415), en 2x8(of 9) V/4 VA (bijv. Block FLD4/8, Hahn BVUI 3020161, Monacor FTR-49 – zie trafoprint elders in dit nummer)
* zie tekst
R1 = 75
R2 = 220
R3 = 470
R4,R50 = 4,7
R5 = 4x10 k SIL-array
R6 = 10 k
R7...R10 = 22
R11...R24 = 820
R25,R26 = 2k49 1%
R27,R30,R33,R36 = 3k57 1%
R28,R34 = 4k12 1%
R29,R35 = 3k92 1%
R31,R37 = 3k65 1%
R32,R38 = 3k32 1%
R39,R41,R45,R49 = 1 M
R40,R42 = 100
R43,R44,R47,R48 = 150 k
R46 = 10
R51,R53 = 249 1%
R52,R54 = 750 1%
R55,R56 = 3,3
R57 = 3k9
R58 = 1,5
Condensatoren:
C1,C2 = 10 n keramisch
C3 = 68 n
C4,C6,C10,C16,C62...C65,C72,C73,C83 = 10 µF/63 V radiaal
C5,C7 = 47 n keramisch
C8,C9,C11,C12,C15,C17,C46...C53,
C59...C61,C66,C67,C70,C71,C74,C75,C82,C84 = 100 n keramisch
C13,C14,C23,C24,C44,C45,C54 = 47 µF/25 V radiaal
C18...C21,C39...C42 = 4µ7/63 V radiaal
C22,C43,C58,C68,C69 = 100 µF/25 V radiaal
C25,C26 = 47 p polystyreen/ polypropyleen axiaal (EMZ )
C27,C33 = 2n2 1% polystyreen/ polypropyleen (EMZ )
C28,C34 = 4n7 1% polystyreen/ polypropyleen (EMZ )
C29,C35 = 330 p 1% polystyreen/ polypropyleen (EMZ)
C30,C36 = 1 n 1% polystyreen/ polypropyleen (EMZ)
C31,C37 = 1n5 1% polystyreen/ polypropyleen (EMZ)
C32,C38 = 270 p 1% polystyreen/ polypropyleen (EMZ)
C55 = 220 µF/25 V radiaal
C56 = 1 µF/63 V radiaal
C57 = 470 µF/25 V radiaal
C76,C77 = 1000 µF/40 V radiaal
C78...C81,C86...C89 = 22 n ker.
C85 = 1000 µF/25 V radiaal
Spoelen:
L1...L4 = 47 µH
Halfgeleiders:
D1 = 1N4001
D2,D3 = 1N4148
D4...D6 = 5V6/1W3
D7 = rode high-efficiency-LED
LD1,LD2 = HDN1075O (Siemens)
T1,T2 = BC517
IC1 = CS8414-CS (Crystal)
IC2 = TORX173 (Toshiba)
IC3 = 6.144MHz SG531P (Seiko Epson)
IC4 = 74HCT32
IC5 = GAL22V10B-25LP (EPS: 996530-1 - zie Service-pagina’s)
IC6 = DF1704E (Burr-Brown)
IC7,IC8 = PCM1704U (Burr-Brown)
IC9...IC12 = OPA627AP (Burr-Brown)
IC13 = LM317 (TO220)
IC14 = LM337 (TO220)
IC15 = 7812
IC16 = 7912
IC17 = 7805
Diversen:
JP1 = 2-polige pinheader + jumper
JP2,JP3 = draadbrug *
K1,K6,K7 = cinchbus voor printmontage (bijv. Monacor T-709G)
K2 = 10-polige boxheader male
K4 = 10-polige PCB-connector (voor flatcable)
K3,K5 = 16-polige boxheader male
K8,K12,K13 = 2-polige printkroonsteen steek 5 mm
K9...K11 = 3-polige printkroonsteen steek 5 mm
S1,S2,S4 = 4-polige DIP-switch
S3 = 8-polige DIP-switch
B1,B2 = B80C1500 recht
Re1...Re3 = V23042-A2003-B101, 12 V/600 W (Siemens)
voedingstrofo’s: 2x15 V/4 VA (bijv. Block FLD4/15, Hahn BVUI 3020165, Monacor FTR-415), en 2x8(of 9) V/4 VA (bijv. Block FLD4/8, Hahn BVUI 3020161, Monacor FTR-49 – zie trafoprint elders in dit nummer)
* zie tekst
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