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Power Design

Everything tagged “Power Design” across notes, resources, and Mochi logs.

Annotated PCB view comparing narrow signal traces with a wider power trace
New
NotesPCB Design

Net Classes and Trace Width: When Should a PCB Trace Be Wider?

A practical guide to PCB net classes and trace width for small boards: signal traces, 3V3, 5V, battery paths, ground, power vias, and a pre-Gerber checklist.

PCB DesignHardwareESP32Power DesignKiCad
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Original diagram showing a signal trace and its compact return path over a continuous ground plane
New
NotesPCB Design

PCB Ground Planes: GND Is More Than a Net Name

A practical guide to PCB ground planes, return current, GND layout mistakes, stitching vias, decoupling paths, and copper pour checks.

PCB DesignHardwareESP32Power DesignKiCad
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Close-up of SMD capacitors and resistors on a printed circuit board
NotesPCB Design

Choosing Capacitors for Electronics: Simple Part, Easy Mistake

A beginner guide to choosing capacitors for circuits: capacitance, voltage rating, decoupling, ceramic types, DC bias, and ESP32 values.

PCB DesignHardwareCapacitorsPower DesignESP32
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Top-view PCB render of the ESP32-S3 battery power reference design used in the article
NotesHardware

ESP32 Battery Power Design: From USB-C Charging to the 3.3V Rail

Review an ESP32-S3 battery power path from USB-C and TP4056 charging to protection, load sharing, 3.3V regulation, and load budget.

HardwarePCB DesignESP32-S3USB-CLi-ionPower Design
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