S36012 Power Supply Circuit Diagram !!hot!! | Limited • Solution |
The S36012 is a typical designed to convert high-voltage AC mains (100V–240V) into the low-voltage DC rails required by a television. These usually include a 5V standby rail , a 12V rail (for the main board and audio), and a 24V rail (often used for the LED backlight inverter).
12V DC (manually adjustable from 10.8V to 13.2V via an onboard trimmer potentiometer)
Protects the entire system against catastrophic overcurrent or short circuits. s36012 power supply circuit diagram
Output a complementary pair of square-wave pulses to drive the main switching transistors. Stage 4: High-Frequency Switching (Half-Bridge Topology)
Interpreting the "s36012 power supply circuit diagram" is a valuable skill. The schematic is a symbolic representation of the physical connections. Follow these steps to navigate it effectively: The S36012 is a typical designed to convert
(Inductors and Capacitors) ensure a clean 12V output with minimal ripple. Feedback & Regulation:
| Reference | Part Type | Value / Rating | Function | | :--- | :--- | :--- | :--- | | F1 | Fuse | 10A / 250V Slow-blow | Overcurrent protection | | BD1 | Bridge Rectifier | 8A / 600V | AC to DC conversion | | C5, C6 | Electrolytic | 200V / 330µF (x2) | Bulk storage | | Q1, Q2 | NPN BJT | E13009-2 (or MJE13009) | Main switching transistors | | T1 | Main Transformer | EE42 core, 2+2 turn secondary | Voltage step-down / isolation | | IC1 | PWM Controller | TL494CN | Pulse width modulation | | IC2 | Optocoupler | PC817 | Isolated feedback | | IC3 | Shunt Regulator | TL431 | Precision voltage reference | | D15, D16 | Schottky Diode | MBR20100CT (x2) or 30A module | Output rectification | | L1 | Output Choke | 10µH, toroidal (yellow core) | Output filtering | | P1 | Trimmer Pot | 10kΩ | Voltage adjustment | | R33 | Current Sense | 0.01Ω / 5W | Overload detection | Output a complementary pair of square-wave pulses to
An output inductor (toroidal coil) and several low-ESR capacitors smooth the final DC output to minimize "ripple voltage." Critical Component Values for Repair
A precision programmable shunt regulator (TL431) monitors the 12V output rail via a resistor divider network. A potentiometer (VADJ) is placed here to allow the user to fine-tune the output between roughly 10.5V and 14V.