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Tercet audio

Luunoronti·tercet-audio·headamp/kicad/headamp.kicad_sch

This repository ships a schematic but no board layout.

About the Tercet audio PCB

Tercet audio is an open source PCB design by Luunoronti, published on GitHub. It is a board, with 95 components from 54 distinct parts.

Other key parts include the ECC82, EL84 (trioda) and LD1085 (LDO). By type, the board carries 33 resistors, 25 capacitors, 11 diodes, 6 ICs, 5 switches and 4 connectors.

It belongs with the audio designs in this gallery.

From the project

Czwarte urządzenie serii (poza kanonicznym "tercetem"): biurkowy wzmacniacz słuchawkowy pod Beyerdynamic DT 770 M (80 Ω), źródło: DAC (E-MU 0202 USB, wyjście liniowe). W torze sygnałowym wyłącznie lampy i transformatory.

Czwarte urządzenie serii (poza kanonicznym "tercetem"): biurkowy wzmacniacz słuchawkowy pod Beyerdynamic DT 770 M (80 Ω), źródło: DAC (E-MU 0202 USB, wyjście liniowe). W torze sygnałowym wyłącznie lampy i transformatory.

Topologia (na kanał): ½ ECC82 (wspólna katoda) → RC → EL84 w triodzie (g2→a przez 100R) → transformator SE 5k:80 Ω. Bez globalnego NFB. B+ ~300 V (CLC), żarzenie DC + elewacja +50 V — blok wspólny, patrz common/ (LD1085, identyczny jak w RIAA).

Main components on the Tercet audio

ECC82EL84 (trioda)LD1085 (LDO)

Tercet audio bill of materials (BOM)

95 components, 54 distinct parts.

QtyPartRefs
2
ECC82
U1, U3
3
EL84 (trioda)
U2, U4, U202
1
LD1085 (LDO)
U301
1
MAINS 230V
J1
1
IN L (RCA)
J401
1
IN R (RCA)
J402
1
jack 6,3mm TRS (DT 770 M 80R)
J403
1
T500mA
F1
1
9V
K1
1
NE-2 (jewel)
NE1
1
NTC 10R
RT1
2
50k log (podwojny)
RV1, RV2
1
S14K275
RV301
1
ON/OFF
SW1
2
S2 wokal
SW2, SW3
2
S1 crossfeed
SW401, SW402
2
OPT SE 5k:80R (>=25H, 45mA)
T1, T2
1
EI84 100VA: 230V : 250V/0,15A + 7V/3A
T301
4
UF4007
D301, D302, D303, D304
1
1N4007
D305
Show 34 more
QtyPartRefs
4
1N5822
D306, D307, D308, D309
2
1N5408
D310, D311
1
5-10H 100mA
L1
4
220n
C1, C7, C404, C405
2
1u/25V
C2, C9
2
100u/25V
C3, C10
2
47u/350V
C4, C8
2
100n/400V
C5, C11
3
470u/25V
C6, C12, C306
1
10n/1kV
C301
2
220u/400V
C302, C303
1
10u/100V
C304
1
10000u/16V
C305
1
10u/25V
C307
1
1u
C308
1
100n/630V
C309
2
470n
C401, C406
4
470k
R1, R6, R10, R15
6
1k
R2, R7, R11, R16, R401, R408
2
1k5
R3, R12
2
47k/2W
R4, R13
2
10k/2W
R5, R14
2
270/5W
R8, R17
2
100
R9, R18
2
220k
R301, R304
1
470R
R302
1
220k/2W
R303
1
47k
R305
1
4k7/10W
R306
1
240R
R307
1
976R
R308
1
10R/5W
R309
2
2k2
R404, R407
2
3k3
R406, R409

Tercet audio design files

The KiCad project lives in the Luunoronti/tercet-audio repository on GitHub; these links point at the commit this page was built from.

Tercet audio: common questions

How many components are on the Tercet audio?

95 components, from 54 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tercet audio design files?

From the Luunoronti/tercet-audio repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Tercet audio design in my own project?

The repository has no license, so all rights stay with Luunoronti. Use it as a reference, and ask the author before reusing the design.

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