DIY Dual-Output Bench Lab Power Supply - Free 3D Print Model

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Fabian Olczak

Hobby & DIY>Electronics

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P1S

P1P

X1 Carbon

X1E

H2D

H2D Pro

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H2C

X2D

A2L

0.2mm layer, 3 walls, 15% infill

Designer

13.5 h

9 plates

5.0(1)

Open in Bambu Studio

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Bill of Materials

Bambu Filaments

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Matte Ivory White (11100) / Refill / 1kg

PLA Matte

PLA Matte

Black (51100) / Filament with spool / 1 kg

TPU 95A HF

List other parts

M3x30 screw set (Used for case assembly) x 1: https://pl.aliexpress.com/item/1005006389970443.html?spm=a2g0o.productlist.main.2.4ce93abeyqn5LX&algo_pvid=fcf76844-7728-4f2a-bf90-f6af0586eb96&algo_exp_id=fcf76844-7728-4f2a-bf90-f6af0586eb96-1&pdp_ext_f=%7B%22order%22%3A%2256%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2113.40%2111.39%21%21%2124.59%2120.90%21%40211b819117418924081975086e8b9e%2112000036994564212%21sea%21PL%212665987231%21X&curPageLogUid=Puu70MchEFss&utparam-url=scene%3Asearch%7Cquery_from%3A
M3x6 screw set (Used for case assembly) x 1: https://pl.aliexpress.com/item/1005006389970443.html?spm=a2g0o.productlist.main.2.4ce93abeyqn5LX&algo_pvid=fcf76844-7728-4f2a-bf90-f6af0586eb96&algo_exp_id=fcf76844-7728-4f2a-bf90-f6af0586eb96-1&pdp_ext_f=%7B%22order%22%3A%2256%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2113.40%2111.39%21%21%2124.59%2120.90%21%40211b819117418924081975086e8b9e%2112000036994564212%21sea%21PL%212665987231%21X&curPageLogUid=Puu70MchEFss&utparam-url=scene%3Asearch%7Cquery_from%3A
M3 nut set x 1: https://pl.aliexpress.com/item/4000602853448.html?spm=a2g0o.productlist.main.3.7965QdlVQdlVzO&algo_pvid=6297c05e-8ace-47b6-87f9-8ca7dbccaa20&algo_exp_id=6297c05e-8ace-47b6-87f9-8ca7dbccaa20-2&pdp_ext_f=%7B%22order%22%3A%222338%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%214.62%214.62%21%21%211.17%211.17%21%40211b819117418924372255982e8b9e%2110000003767007634%21sea%21PL%212665987231%21X&curPageLogUid=bYA3CTbk4K5d&utparam-url=scene%3Asearch%7Cquery_from%3A
Plexiglass (optional) (Transparent side panel 300x300x2) x 1: https://pl.aliexpress.com/item/32817321651.html?channel=twinner
DC-DC Step-Down Converter (LM2596) 3A, 3-35V input, 1.5-30V output x 1: https://pl.aliexpress.com/item/10000000656280.html?aff_fcid=411572c11b374c8e9738f2bf47282b3f-1741891751502-02557-_DlLNBBL&tt=CPS_NORMAL&aff_fsk=_DlLNBBL&aff_platform=shareComponent-detail&sk=_DlLNBBL&aff_trace_key=411572c11b374c8e9738f2bf47282b3f-1741891751502-02557-_DlLNBBL&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
USB-A Socket USB 2.0 Female x 2: https://pl.aliexpress.com/item/1005003776228854.html?spm=a2g0o.productlist.main.21.4c4fRQW3RQW3vc&algo_pvid=0601fd93-1c16-48fa-b279-299d3ab190e1&algo_exp_id=0601fd93-1c16-48fa-b279-299d3ab190e1-20&pdp_ext_f=%7B%22order%22%3A%2262%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%218.40%218.40%21%21%212.13%212.13%21%40211b612517418921239167703e6a65%2112000027126402650%21sea%21PL%212665987231%21X&curPageLogUid=xJTqF9wrpd3g&utparam-url=scene%3Asearch%7Cquery_from%3A
4mm Banana Jacks Screw-in terminals x 2: https://pl.aliexpress.com/item/1005003122901240.html?spm=a2g0o.productlist.main.7.5930d87dDIIRo6&algo_pvid=d2e9e55c-a547-4329-b3a2-4937767a5d4f&algo_exp_id=d2e9e55c-a547-4329-b3a2-4937767a5d4f-6&pdp_ext_f=%7B%22order%22%3A%22495%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2112.69%2112.69%21%21%213.22%213.22%21%40211b628117418918953596498e72b1%2112000028219052895%21sea%21PL%212665987231%21X&curPageLogUid=KX6I6xZg8ah4&utparam-url=scene%3Asearch%7Cquery_from%3A
Voltmeter & Ammeter Display 0-100V, 10A, Red/Blue x 1: https://pl.aliexpress.com/item/1005001811202202.html?aff_fcid=fbdad16eac3e4f228cead59977ff1f28-1741891983034-09251-_DdcwCup&tt=CPS_NORMAL&aff_fsk=_DdcwCup&aff_platform=shareComponent-detail&sk=_DdcwCup&aff_trace_key=fbdad16eac3e4f228cead59977ff1f28-1741891983034-09251-_DdcwCup&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
DC-DC Step-Down Converter (XL4016) 250W, 1.2V-30V, 8A XH-M404 x 1: https://pl.aliexpress.com/item/1005006429008896.html?spm=a2g0o.productlist.main.1.35174GjE4GjEGu&algo_pvid=36bf1cb9-ae39-4714-9972-4ffb90b8ee99&algo_exp_id=36bf1cb9-ae39-4714-9972-4ffb90b8ee99-0&pdp_ext_f=%7B%22order%22%3A%22264%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2111.39%2111.39%21%21%2120.90%2120.90%21%402103834817418922860581167e66aa%2112000037138268105%21sea%21PL%212665987231%21X&curPageLogUid=uQCERsMqdDy8&utparam-url=scene%3Asearch%7Cquery_from%3A
5mm LED Holders Metal, M7 thread x 3: https://pl.aliexpress.com/item/1005002248561990.html?spm=a2g0o.productlist.main.5.7352144f4ZPfOJ&algo_pvid=4bab7e5a-f321-4519-9528-3fc0805dee37&algo_exp_id=4bab7e5a-f321-4519-9528-3fc0805dee37-4&pdp_ext_f=%7B%22order%22%3A%22391%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%216.12%216.12%21%21%211.55%211.55%21%402103894417418918090402458e312e%2112000019650588207%21sea%21PL%212665987231%21X&curPageLogUid=csVehKJQAJrH&utparam-url=scene%3Asearch%7Cquery_from%3A
AC Power Socket with Fuse IEC 250V x 1: https://pl.aliexpress.com/item/1005004921974470.html?aff_fcid=328f797c2c8d493f875802d4fce1834d-1741891473990-03331-_DE8JCmd&tt=CPS_NORMAL&aff_fsk=_DE8JCmd&aff_platform=shareComponent-detail&sk=_DE8JCmd&aff_trace_key=328f797c2c8d493f875802d4fce1834d-1741891473990-03331-_DE8JCmd&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
Fuse Holders For 5x20mm glass fuses x 2: https://pl.aliexpress.com/item/32829745396.html?aff_fcid=29a0dc5bb4dc4fcbbd28dad74ec302c8-1741891797626-08550-_DlEpqBn&tt=CPS_NORMAL&aff_fsk=_DlEpqBn&aff_platform=shareComponent-detail&sk=_DlEpqBn&aff_trace_key=29a0dc5bb4dc4fcbbd28dad74ec302c8-1741891797626-08550-_DlEpqBn&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
5mm Red LEDs 20mA, 620-625nm x 3: https://pl.aliexpress.com/item/1005003483614644.html?aff_fcid=a96675d0174b4c348edd0fe7edb78eab-1741891795761-03537-_DeLVlDX&tt=CPS_NORMAL&aff_fsk=_DeLVlDX&aff_platform=shareComponent-detail&sk=_DeLVlDX&aff_trace_key=a96675d0174b4c348edd0fe7edb78eab-1741891795761-03537-_DeLVlDX&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
Toggle Switch E-TEN1321, 15A, 250V, 2-position, 6-pin x 3: https://pl.aliexpress.com/item/1005004411546037.html?spm=a2g0o.productlist.main.10.7ae4kMUTkMUTYe&algo_pvid=e799e6f1-46cc-4aa2-b75d-a8ccd2d49065&algo_exp_id=e799e6f1-46cc-4aa2-b75d-a8ccd2d49065-9&pdp_ext_f=%7B%22order%22%3A%221107%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2117.23%2117.22%21%21%2131.61%2131.59%21%40210385db17418923674381118e9dd8%2112000035437287451%21sea%21PL%212665987231%21X&curPageLogUid=J3wQretJQyXm&utparam-url=scene%3Asearch%7Cquery_from%3A
120mm Fan for cooling x 1: https://pl.aliexpress.com/item/1005005453331843.html?aff_fcid=40b3954a373b41e59eefddefc464b96a-1741891478900-04464-_DFYSa5T&tt=CPS_NORMAL&aff_fsk=_DFYSa5T&aff_platform=shareComponent-detail&sk=_DFYSa5T&aff_trace_key=40b3954a373b41e59eefddefc464b96a-1741891478900-04464-_DFYSa5T&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
6A Glass Fuse x 1: https://pl.aliexpress.com/item/4000567454650.html?aff_fcid=709784c1236642e2b9f413d524b2271f-1741891798269-06379-_DF25qSd&tt=CPS_NORMAL&aff_fsk=_DF25qSd&aff_platform=shareComponent-detail&sk=_DF25qSd&aff_trace_key=709784c1236642e2b9f413d524b2271f-1741891798269-06379-_DF25qSd&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
8A Glass Fuse x 1: https://pl.aliexpress.com/item/4000567454650.html?aff_fcid=709784c1236642e2b9f413d524b2271f-1741891798269-06379-_DF25qSd&tt=CPS_NORMAL&aff_fsk=_DF25qSd&aff_platform=shareComponent-detail&sk=_DF25qSd&aff_trace_key=709784c1236642e2b9f413d524b2271f-1741891798269-06379-_DF25qSd&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
USB-C Female Connector 4-pin, PCB-mounted x 1: https://pl.aliexpress.com/item/1005006112495484.html?channel=twinner
1kΩ Resistors For LED circuits x 3: https://pl.aliexpress.com/item/1005003117726705.html?aff_fcid=67c5aa97180a4ba384cfb3d2da345df2-1741891989858-02281-_De5EF2Z&tt=CPS_NORMAL&aff_fsk=_De5EF2Z&aff_platform=shareComponent-detail&sk=_De5EF2Z&aff_trace_key=67c5aa97180a4ba384cfb3d2da345df2-1741891989858-02281-_De5EF2Z&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
24V 5A Power Supply AC-DC x 1: https://pl.aliexpress.com/item/33016298750.html?aff_fcid=fe418d8b09794f47a6dab333dd9a9cc5-1741891475732-07681-_Dkifbgz&tt=CPS_NORMAL&aff_fsk=_Dkifbgz&aff_platform=shareComponent-detail&sk=_Dkifbgz&aff_trace_key=fe418d8b09794f47a6dab333dd9a9cc5-1741891475732-07681-_Dkifbgz&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
XY-SK35H Converter Adjustable voltage module x 1: https://pl.aliexpress.com/item/1005007345679991.html?aff_fcid=61dd81d4f4684c9f998004ebe66d4b4a-1741891981800-02207-_DkrRom5&tt=CPS_NORMAL&aff_fsk=_DkrRom5&aff_platform=shareComponent-detail&sk=_DkrRom5&aff_trace_key=61dd81d4f4684c9f998004ebe66d4b4a-1741891981800-02207-_DkrRom5&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
22AWG Wires x 1: https://pl.aliexpress.com/item/1005006436612968.html?aff_fcid=7b0a7b41e77e4a63b3e7c4efd96382ff-1741891991421-03649-_DFTCq6z&tt=CPS_NORMAL&aff_fsk=_DFTCq6z&aff_platform=shareComponent-detail&sk=_DFTCq6z&aff_trace_key=7b0a7b41e77e4a63b3e7c4efd96382ff-1741891991421-03649-_DFTCq6z&terminal_id=f713348dbc2d46fd8c513939802548e9&afSmartRedirect=y
Magnets 5x2 x 16: https://pl.aliexpress.com/item/1005007186779007.html?spm=a2g0o.productlist.main.1.2bac7c6cJNIB6P&algo_pvid=7a2a3daa-87c1-4576-9b8a-aed5ddd00f11&algo_exp_id=7a2a3daa-87c1-4576-9b8a-aed5ddd00f11-0&pdp_ext_f=%7B%22order%22%3A%22603%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%213.75%213.75%21%21%210.95%210.95%21%40210390c217418935846548927e7538%2112000039736809564%21sea%21PL%212665987231%21X&curPageLogUid=Qm6QgnJfEGxP&utparam-url=scene%3Asearch%7Cquery_from%3A
Carbon Filter 110x110x10 x 1: https://pl.aliexpress.com/item/1005003090089952.html?spm=a2g0o.productlist.main.2.16b870baPu2HnO&algo_pvid=35a4cdaf-d45a-4b54-91a8-b80ce17c629b&algo_exp_id=35a4cdaf-d45a-4b54-91a8-b80ce17c629b-1&pdp_ext_f=%7B%22order%22%3A%22919%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21PLN%2116.69%2116.69%21%21%214.23%214.23%21%40210385db17418936048976046e9df0%2112000024020486506%21sea%21PL%212665987231%21X&curPageLogUid=dhYRt5qwRyls&utparam-url=scene%3Asearch%7Cquery_from%3A

Description

Boost Me (for free)

Your boost means a lot – thanks for supporting my designs!

This is a fully 3D-printable enclosure for a dual-output laboratory power supply, designed for makers, hobbyists, and engineers. It provides two independent power outputs:

1. Fixed Voltage Line: Adjustable via an internal potentiometer, featuring banana plug outputs, a USB-A port, a power switch with an LED indicator, a fuse slot, and a display showing voltage and current.

2. Adjustable Voltage Line: Equipped with USB-A, USB-C, and banana plug outputs, along with a fuse, an LED power switch, and a module with a display allowing real-time voltage and current adjustments.

The power supply also includes a main fuse for AC input and two master switches for added safety. One of the side panels can be made of plexiglass for visibility, but if preferred, users can print a second solid panel with magnetically held access doors.

This project includes a full list of required components and is designed for easy assembly using standard screws and connectors. Please check the provided photos to select the correct component variants from the linked stores.

💬 If you have any questions, feel free to leave a comment or send me a private message!

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electronics accessories

power supply emclosure

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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.