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.
IPC2221A
High side to low side isolation

Line Bypass Capacitor

CY3

Fusing

Fuse F1
NTC1
D1

In Conclusion

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Building things.

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Ryan Walker

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Building things.

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