The TL431 compares a fraction of the output voltage to an internal 2.5V reference. If the voltage rises above 20V, the TL431 conducts more current. This current flows through an , causing its internal LED to glow brighter.
Before analyzing the schematic, let’s define the hardware. The ADP-160ER is a 160-watt, 20-volt DC power adapter. Typical specifications include: Adp-160er Schematic
SW / Inductor node (if exposed)
The high-voltage DC now feeds the primary winding of the main transformer (T1) and the drain pin of the main switching MOSFET (Q1, often an 11N60 or similar). The TL431 compares a fraction of the output
: You can also find technical diagrams for this specific PSU model under different document titles on Scribd and Scribd (Spanish) . Adp-160er Schematic