I’m not putting a WiFi router into a phone charger (Part 3)

Sourcing Electronics

Graphical Guide to Sourcing Electronics

Power Board Design

Boards with no components
Flyback Design

Transformer Isolation

Half decent looking transformer

PCB Isolation

  1. Clearance is the shortest distance in air between two conductive parts.
  2. Creepage distance is the shortest distance along the surface of solid insulating material between two conductive parts.
High side to low side isolation

Line Bypass Capacitor



Fuse F1

In Conclusion




Building things.

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Ryan Walker

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Building things.

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