Versatile Power Supply for Breadboards
Positive and Negative Voltages Out of 5 V from USB
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.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Components
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Component list
Resistors (size 0603, unless otherwise stated)
R1 = 39 k
R2 = 27 k
R3 = 120 k
R4 = 33 k
R5,R6,R8 = 4k7
R7 = 68 k
P1,P3 = 500 k multi-turn trimmer (Vishay style 24 W)
P2 = 200 k multi-turn trimmer (Vishay style 24 W)
Inductors
L1,L2 = 10 µ, 1 A (Fastron 242408FPS)
Capacitors
C1,C2 = 10 µ, 16 V X5R size 0805
C3,C4 = 4µ7, 50 V X7R size 1206
C5,C6,C8 = 1 µ, 16 V X7R size 0603
C7 = 220 n, 16 V X7R size 0603
C9 = 4µ7, 25 V X5R size 0805
C10 = 100 n, 16 V X7R size 0603
C11,C12 = 100 n, 50 V X7R size 0805
Semiconductors
D1,D2 = Schottky diode 40 V/1 A PMEG4010, SOD-323
LED1 = low-current LED 3 mm, green
LED2,LED3 = low-current LED 3 mm, red
IC1 = Dual-Output (+ and -) DC-DC Converter MAX8614BETD+
IC2 = 1.7 –5.5 VIN, 1 A adjustable LDO MAX38903BATB+
Miscellaneous
J1,J2 = pin header 2 x 2 pins (pitch 100 mil)
JP1 = pin header 2 x 3 pins (pitch 100 mil, see text)
K1 = micro-USB connector, Amtek MIUSB-F5M-AGB-U
S1 = slide switch SDPT, NKK Switches CS12ANW03
jumper cap for JP1
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