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Std EditionEF95 6AK5 Battery Operated Tube Headphone Amplifier

Profile:EF95 6AK5 Hybrid Tube Headphone Amplifier

License: GPL 3.0

Published Time:2020-12-04 05:43:58
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Description

EF95/6AK5 Tube Headphone Amplifier, it's a hybrid amplifier meaning the final amplification is done using an op-amp. The amplifier consists of a UC3843 100v booster for the tubes, an ABLIC S-8254 4s battery protection system, a LM3914 battery level meter, a TP4056 battery charger and a MH-M18 bluetooth module.

This project is the main amplifier baord, this is enough to run the amplifier and the other modules are not necessary.

See other projects for additional schematics.

YouTube Video of project: Part 1 Part 2 Part 3

Blog: https://ratti3.blogspot.com/2020/12/making-battery-operated-ef956ak5-hybrid.html

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EF95 6AK5 Hybrid Tube Headphone Amplifier

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Input Selector

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UC3843B 100v Booster

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EF95 6AK5 Hybrid Tube Headphone Amplifier

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ID Name Designator Footprint Quantity BOM_Supplier BOM_Supplier Part
1 47K R13,R14 R1206 2 LCSC C137270
2 4.7K R6,R3 R1206 2 LCSC C137262
3 470K R4,R1 R1206 2 LCSC C137273
4 270 R2,R5 R1206 2 LCSC C229488
5 100u C6,C5 CAP-D8.0×F3.5 2 Mouser 647-UFG1E101MPM
6 220u C12,C14,C13,C11 CAP-D10.0×F5.0 4 Mouser 647-UFG1E221MPM
7 1.5K R15,R18 R1206 2 LCSC C114929
8 1u C8,C10,C7,C9,C4,C3 CAP-TH_L7.3-W7.5-P5.00-D0.5 6 RS-Online 896-1411
9 1K R12,R10 R1206 2 LCSC C131398
10 10K R16,R17,R27 R1206 3 LCSC C84376
11 3K R7,R8 R1206 2 LCSC C229609
12 22K R21 R1206 1 LCSC C114942
13 470u C2,C1 CAP-D10.0×F5.0 2 Mouser 647-UKA1E471MPD1TD
14 PH-2AK PWR_LED,BT_12V CONN-TH_PH-2A 2 LCSC C8886
15 RK097G VR1 RK097G 1 Mouser 652-PTD902-2015KA503
16 PH-3A RHOS PRE_OUT,HEADPHONES,LINE_IN,BT_IN,BT_SW,VALVE_LED CONN-TH_12P-P2.00-H-W4.8_PH-3A 6 LCSC C2320
17 XH-2A 12V CONN-TH_XH-2A 1 LCSC C20079
18 EF95 V2,V1 B7G-SKT 2 eBay 6AK5
19 100K R9,R11 R1206 2 LCSC C137393
20 2.2K R19,R20 R1206 2 LCSC C114933
21 NE5532P U1 DIP-8_L9.4-W6.4-P2.54-LS9.1-BL 1 LCSC C5326
22 ZMM22 ZD1,ZD2 LL-34_L3.5-W1.5-RD 2 LCSC C8073
23 10K R26,R23 R0805 2 LCSC C84376
24 17-21/S2C-FR1S2L/3T ACTIVE LED0805-R-RD 1 LCSC C264419
25 1N4002W D2,D3 SOD-123F_L2.8-W1.8-LS3.7-RD 2 LCSC C169542
26 G6K-2P-Y-12V RELAY_OUT,RELAY_IN RELAY-TH_6S-2-4.5VG6K-2P-Y-12V 2 LCSC C132367
27 BC846ALT1G Q3,Q2 SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR 2 LCSC C163723
28 K3-1260D-F1 LED SW-TH_K3-1260D-F1 1 LCSC C223843
29 22uF C15 CAP-SMD_BD6.3-L6.6-W6.6-FD 1 LCSC C88142
30 100K R25,R24,R22 R0805 3 LCSC C96346
31 MMBTA92LT1G Q4 SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR 1 LCSC C82049
32 1N4148W-7-F D1 SOD-123_L2.8-W1.8-LS3.7-RD 1 LCSC C83528
33 2K R28 R1206 1 LCSC C133543
34 MHT170UGCT LED3,LED4 LED0805-RD 2 LCSC C397047
35 1.8K R29,R31 R1206 2 LCSC C137372
36 7.5K R30,R32 R1206 2 LCSC C137232
37 MHT170CRCT LED1,LED2 LED0805-RD 2 LCSC C389523
38 56K R33 R0805 1 LCSC C137509
39 100nF C19 C0805 1 LCSC C342919
40 S115FA SD1 SOD-123_L2.8-W1.8-LS3.7-RD 1 LCSC C258208
41 2.2 R38,R39,R40,R37 R1206 4 LCSC C137327
42 4.7nF C17 C0805 1 LCSC C193083
43 2.2K R41 R0805 1 LCSC C114561
44 470uF C20 CAP-SMD_BD8.0-L8.3-W8.3-FD 1 LCSC C193277
45 220uH L1 IND-SMD_L7.3-W7.3 1 LCSC C241217
46 100pF C16 C0805 1 LCSC C508866
47 1 R44,R43 R1206 2 LCSC C137355
48 UC3843BVD1R2G U61 SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL 1 LCSC C231572
49 22 R36 R0805 1 LCSC C107702
50 470pF C18 C0805 1 LCSC C28256
51 15uF C22,C21 CAP-SMD_BD10.0-L10.3-W10.3-RD 2 LCSC C487528
52 FQD2N60CTM Q1 PG-TO252-3_L6.3-W6.5-P4.57-LS10.0-BR-CW 1 LCSC C5386
53 1K R35 R0805 1 LCSC C95781
54 84.5K R42 R0805 1 LCSC C229022
55 5.1K R34 R0805 1 LCSC C84375

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