One Plug for Raspberry Pi and Audio DAC
A DIY Dual Power Supply

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Component list
Component List
Resistors
R1 = 6.8 Ω, 3 W, 1500 V pulse (AC03000006808JAC00, Vishay/Draloric)
R2 = 1.5 kΩ, 0.25 W, 5 %
Capacitors
C1,C5 = 1 µF, 25 V, 5 %, SMD 0805
C2,C6 = 220 µF, 16 V, aluminium polymer, 10 mΩ, diam. 8 mm, lead spacing 2.5/3.5 mm (870135374003, Würth Elektronik)
C3,C4 = 22 µF, 25 V, X7R, SMD 1210
C7 = 100 nF, 50 V, 5 %, X7R, SMD 0805
Inductors
L1 = 4.7 µH, 1.2 A, 0.117 Ω, SMD 4x4 mm (TYS40184R7M-10, Laird Performance Materials)
L2 = Common mode choke M-524CT, 0.5 A, 700 Ω @ 10 MHz, RDC 0.1 Ω (Kemet)
Semiconductors
D1 = TVS diode SMBJ7.0A, SMD DO-214AA-2
D2 = TVS diode SMBJ12A, SMD DO-214AA-2
LED1 = 3 mm LED, optional
Others
K1 = Terminal block, pitch 7.62 mm (GMKDSN 1.5/ 2-7.62 – 1707027, Phoenix Contact)
K2 = USB Type A Receptacle, PCB mount, (87520-0010BLF, Amphenol ICC)
K3,K4 = Terminal block, pitch 3.5 mm (PT 1,5/ 2-3,5-H – 1984617, Phoenix Contact)
F1 = Leaded fuse 3.15 A, time-delay, 300 VAC, radial pitch 5.08 mm (SS-5H-3.15A-APH, Bussmann/Eaton)
MOV1 = MOV S14K350 (B72214P2351K103, Epcos/TDK)
MOD1 = MP-LD15-23B05R2, AC-DC converter module, 5VDC/15W (Multicomp Pro)
MOD2 = TVN 3-0919, DC-DC converter 3 W, 4.5-13.2V in, 9V/333mA out (Traco Power)
Enclosure CU-1474, black, ABS (Bud Industries)
4 x #4-1/4 self-tapping screw (6004, Serpac)
No Receptacle Power Cord, 1.8 m (361002-E01, Qualtek, plug CEE7/XVI for western Europe)
DC power cord for 9 V= DC power cord, 2.1 mm DC power plug, 6 A max., 24AWG (172-4101, Kobicon)
Cable USB 2.0 Micro-B 2 x open wires, 22 AWG, 20 cm (Delock)
Grommet, flexible, black, inside diameter 3.2 mm (HG-2, Essentra)
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