F4901 1.1a 24v Schematic ((full)) Page

Understanding the requires following the energy flow.

If your F4901 module has failed, do not throw it away. Here are the top 5 failure modes mapped to the schematic. f4901 1.1a 24v schematic

When Q1 turns OFF, the magnetic field collapses. The secondary winding of T1 releases energy through D1 (Schottky diode) into output capacitor C3. The output voltage rises toward 24V. Understanding the requires following the energy flow