Adjustable Power Supply v18.08

Arduino PWM code and voltage sensing

Design buck/boost converter circuit/module

Volt-second balance on the inductor means that the average voltage across it is zero

Discontinuous mode is when current through the output inductor is zero for part of the switching cycle

Figure out ways to salvage or build transformers

Investigate ways to use high frequency for more efficiency in power transformation as well as smaller inductors.

Design

Possible parts: IRFP250NPower transistor (MOSFET) driven by TC1411 1A High-Speed MOSFET Driver with pulse signal originating from arduino.

This page is a great guide.

Applications

Powering 3D printer

Workbench power supply

Charging batteries

Requirements

At least 360W output (12V at 30A)

Adjustable DC voltage output up to 24V

120Vac input

Research

Safety Considerations in Power Supply Design

Inductor volt-second balance, capacitor charge balance, and the small ripple approximation

Understanding Buck-Boost Power Stages

Current Sharing in Parallel Diodes

Buck Converter Design

Open-source based synthetic medium-voltage grid model for distribution power supply systems

Existing Open-Source Projects

Programmable bench power supply EEZ H24005

Bench Power Supply

Modules

edit

Arduino Power Subcircuit

Software

Git Repository

Bill of Materials

Transformer: XFRMR TOROIDAL 500VA CHAS MOUNT, Investigating ways to salvage transformers

Rectifier: RECT BRIDGE FAST 3PHASE I4-PAC-5