WALL WART SCHEMATIC
Of Wall Warts & Wall Transformers - ElectroSchematics
Schematic for #9 wall wart A look inside #8 Visible on the top: X capacitor (right), input rectifiers (2 of the 4 are visible), split bus capacitors, noise filter inductor, switching transistor (Q1), 145°C end of life thermal fuse behind (Q1), ferrite E-core transformer, opto-coupler for feedback (left foreground), schottky rectifier (left), output capacitor (left), and L-C filter (left).
A Dummies’ Guide to Working with Wall Warts :: DXing
Selecting an Appropriate Wall Wart Using wall warts as a basis for power supplies should, for all sorts of reasons including fire safety, be limited to supplying devices that need no more than to amperes of current at the specified voltage.