The S-360-12 (often referred to as S36012) is a widely used 12V 30A (360W) switching mode power supply (SMPS) commonly utilized for LED strips, CCTV systems, and 3D printers. Circuit Overview

2. Key Sections of the Circuit Diagram

Below is a breakdown of the critical stages you will find in a schematic diagram of the S36012 board.

It monitors the output voltage and adjusts the "width" of the pulses to ensure the output stays at a steady 12V, regardless of whether you are drawing 1 Amp or 30 Amps. 3. Switching & Transformation

Stage 3: The PWM Controller (TL494)

The brain of the S36012 power supply circuit diagram is the TL494 IC. Its pins are configured as follows: