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Dual power supply

notAbhay321·Dual-power-supply·ki_cad_pcb_power_supply/power_supply.kicad_sch

Dual power supply

About the Dual power supply PCB

Dual power supply is an open source PCB design by notAbhay321, published on GitHub under the MIT license. It is a board, with 7 components from 4 distinct parts.

Other key parts include the LM2596T-ADJ and ${SIM.PARAMS}.

It belongs with the power & battery and sensors designs in this gallery.

From the project

A custom-designed regulated power supply that converts 230V AC mains into stable 5V and 3.3V DC outputs for ESP32-based smart automation systems (water tank management, irrigation control, etc.).

A custom-designed regulated power supply that converts 230V AC mains into stable 5V and 3.3V DC outputs for ESP32-based smart automation systems (water tank management, irrigation control, etc.).

Assembled prototype — 230V AC to 5V & 3.3V regulated DC

▶️ outputvideo5v and 3.3v.mp4 — Live measurement of both regulated outputs under load.

Off-the-shelf USB adapters and chargers fail in 24/7 automation scenarios because:

Main components on the Dual power supply

LM2596T-ADJ${SIM.PARAMS}

Dual power supply bill of materials (BOM)

7 components, 4 distinct parts.

QtyPartRefs
1
LM2596T-ADJ
U1
1
${SIM.PARAMS}
U2
1
Screw_Terminal_01x02
(9to15)vAC
4
SR560
D_Schottky1, D_Schottky2, D_Schottky3, D_Schottky4

Dual power supply design files

The KiCad project lives in the notAbhay321/Dual-power-supply repository on GitHub; these links point at the commit this page was built from.

Dual power supply: common questions

How many components are on the Dual power supply?

7 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the Dual power supply design files?

From the notAbhay321/Dual-power-supply repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Dual power supply design in my own project?

Yes, under the terms of its MIT license, which notAbhay321 chose for the repository.

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