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STD mini preamp with phono

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Update time： 2023-07-31 13:01:12
Creation time： 2020-09-28 14:46:38
Description
its small, has a phono stage and a powersupply match the jfets as best as u can. 0.1mA or lower if possible. balance pot is 100k linear volume pot is 100k logarithmic switch is 3 way 2 pole
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BOM
BOM download Purchase Parts
ID Name Designator Footprint Quantity
1 1000uF C11,C12,C13,C14 CAP-TH_BD12.5-P5.00-D1.2-FD 4
2 CONN-TH_2P-P5.00 P1 CONN-TH_2P-P5.00 1
3 HLK-PM24 U9,U10 PWRM-TH_HLK-PM24 2
4 MC7815CTG U5 TO-220-3_L10.0-W4.5-P2.54-T 1
5 22mH L1 FILTER-TH_B82791H 1
6 MC7915CTG U11 TO-220-3_L10.0-W4.5-P2.54-L 1
7 220uF C15,C16 CAP-TH_BD8.0-P3.50-D1.0-FD 2
8 HDR-F-2.54_1x2 PHONO_IN(2R),OUT1(1R),IN1(2R),IN2(2R),OUT2(1R) HDR-F-2.54_1X2 5
9 100K R7,R9,R10,R12 R0805 4
10 180K R5,R14 R0805 2
11 1uF C5,C6 RES-TH_L4.0-W2.0-P2.54-D0.7 2
12 22uF C1,C3,C8,C10,C17,C18 CAP-SMD_L7.3-W4.3-R-RD 6
13 100nF C4,C7 CAP-TH_L7.2-W2.5-P5.00-D0.5 2
14 2.7K R6,R13 R0805 2
15 10K R4,R15,R21,R22,R23,R24,R25,R26 R0805 8
16 22nF C2,C9 CAP-TH_L7.2-W2.5-P5.00-D0.5 2
17 47K R1,R18 R0805 2
18 4.7K R3,R16 R0805 2
19 2.2K R2,R17,R31,R41 R0805 4
20 750 R8,R11 R0805 2
21 LM4562MAX/NOPB U1,U2,U3,U4 SO-8_L5.2-W4.4-P1.27-LS7.0-BL 4
22 1M R49,R50,R32,R48 R0805 4
23 HDR-F-2.54_2x4 H6 HDR-F-2.54_2X4 1
24 RK09L12B R19,R20 POTENTIOMETER_ALPS_RK09L_DOUBLE_VERTICAL 2
25 2N2219A T5,T11 TO39 2
26 J112 T2,T1,T9,T10 TO-92-3_L4.8-W3.7-P2.54-L 4
27 2N4401 Q2,Q4 TO-92-3_L4.8-W3.7-P2.54-L 2
28 270 R27,R28,R43,R44 R0805 4
29 2N4403 Q1,Q3 TO-92-3_L4.8-W3.7-P2.54-L 2
30 22 R33,R37,R38,R39 R0805 4
31 30K R34,R40 R0805 2
32 LED-TH-5mm_R LED1,LED2 DO-41_BD2.4-L4.7-P8.70-D0.9-FD 2
33 470 R29,R30,R45,R46 R0805 4
34 240 R36,R42 R0805 2
35 2N2905A T6,T12 TO39 2
36 100 R35,R47 R0805 2
37 J175 T4,T3,T7,T8 TO-92-3_L4.8-W3.7-P2.54-L 4

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