PowerSupply
About the PowerSupply PCB
PowerSupply is an open source PCB design by acalinp, published on GitHub under the MIT license. It is a 2-layer board measuring 87 × 83.2 mm, with 50 components from 28 distinct parts.
Other key parts include the LT1013, LT1086, LM1117-ADJ, LM334Z and ICL7660. By type, the board carries 14 resistors, 10 diodes, 8 ICs, 8 capacitors and 4 connectors.
It belongs with the power & battery designs in this gallery.
From the project
An open source benchtop power supply that's good enough for most purposes.
The case was 3D printed using a Monoprice Select Mini with wood PLA for the front and back panels and green PLA for the top and bottom parts of the case.
The 3D designs were generated using Heartman's Ultimate Box Maker and Steve Colley's Parametric Potentiometer Knob.
Note: Current can go up to 800mA by replacing the five 10 Ohm resistors with five 5 Ohm resistors. One should also double the gain of the differential amplifier in this case, so as to display voltage and current correctly.
Main components on the PowerSupply
PowerSupply bill of materials (BOM)
50 components, 28 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT1013 | DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | LT1086 | TO-220 | U2 |
| 1 | LM1117-ADJ | TO-220 | U3 |
| 3 | LM334Z | TO-92_Inline_Narrow_Oval | U4, U5, U6 |
| 1 | ICL7660 | DIP-8_W7.62mm_Socket_LongPads | U7 |
| 1 | LM7812CT | TO-220 | U8 |
| 1 | Input Voltage | bornier2 | J1 |
| 1 | Output Voltage | bornier2 | J2 |
| 1 | Voltage Meter | bornier3 | J3 |
| 1 | Current Meter | bornier3 | J4 |
| 2 | Heatsink | Heatsink_Fischer_SK129-STS_42x25mm_2xDrill2.5mm | HS1, HS2 |
| 1 | Heatsink | TO220-Small-16mmx8mm | HS3 |
| 1 | 100 (multiturn) | Potentiometer_Trimmer_Bourns_3296W | RV1 |
| 2 | 10k | Potentiometer-3596S-10k-Pot | RV2, RV3 |
| 5 | 1N5819 | D_SOD-323_HandSoldering | D1, D2, D3, D9, D10 |
| 5 | 1N4448 | D_SOD-323_HandSoldering | D4, D5, D6, D7, D8 |
| 4 | 10u | CP_Radial_D5.0mm_P2.00mm | C1, C6, C7, C8 |
| 1 | 47uF electro | CP_Radial_D6.3mm_P2.50mm | C2 |
| 1 | 47u | CP_Radial_D6.3mm_P2.50mm | C3 |
| 1 | 4.7u | C_1210_HandSoldering | C4 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 0.1u | C_0805_HandSoldering | C9 |
| 2 | 50k | R_0805_HandSoldering | R1, R2 |
| 2 | 10k | R_0805_HandSoldering | R3, R4 |
| 5 | 10 | R_1206_HandSoldering | R5, R6, R7, R8, R9 |
| 1 | 1k | R_0805_HandSoldering | R10 |
| 2 | 15 | R_0805_HandSoldering | R11, R13 |
| 1 | 33 | R_0805_HandSoldering | R12 |
| 1 | 330 | R_0805_HandSoldering | R14 |
PowerSupply design files
The KiCad project lives in the acalinp/Open-Source-Power-Supply repository on GitHub; these links point at the commit this page was built from.
PowerSupply: common questions
How big is the PowerSupply PCB?
The PowerSupply measures 87 × 83.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PowerSupply?
50 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the PowerSupply design files?
From the acalinp/Open-Source-Power-Supply repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the PowerSupply design in my own project?
Yes, under the terms of its MIT license, which acalinp chose for the repository.
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