Circuit schematic for the Asus PA-1900-36 power adapter, rated 19 V at 4.74 A, which is about 90 W. The rar archive is 303 KB. A charger schematic is useful for repairing the primary side, checking the PWM controller, rectifier and feedback loop, and tracing why the adapter has no output or shuts off under load. Always discharge the bulk capacitor before measuring, and compare the component markings on your PCB with the drawing, since adapters with the same label can use different internal revisions.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 29 Nov 2021 | Open file on RM Schematics |
| @pepeelectronica | 23 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.