17 V/10 A Switch-Mode Power Supply
For the active multimedia subwoofer
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Component list
R1,R4 = 2k?2
R2,R5 = 2k?21
R3 = 14k?7
R6 = 14k?3
R7 = 0?1 5W
R8 = 6k?8
P1 = 1k? preset
Inductors:
L1,L2,L3 = 100µH 5A, e.g., SFT12-50 (TDK)
Capacitors:
C1-C4 = 47nF
C5,C8,C10,C12-C15,C19 = 100nF MKT (metallised film)
C6,C7 = 1000µF 63V radial
C9,C11,C16,C17,C18 = 220µF 63V radial
Semiconductors:
D1-D6 = MBR745 (Schottky diode, 7.5A 45V piv)
D7 = LED, high-efficiency
IC1,IC2 = LT1074CT (Linear Technology)
Miscellaneous:
K1,K2 = 2-way CB terminal block, lead pitch 5mm
F1 = fuse, 2A/T (time lag), with PCB mount holder
PCB, order code 020054-3
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