SHIELDING PROTECTION FOR SMPS TESTING SCHEMATIC CIRCUIT DIAGRAM

I previously shared an article on my platform, outlining a straightforward protection method specifically designed for testing SMPS power supplies.

The system’s design is uncomplicated: a series-connected 220V lamp is linked to the 220V AC line. When an overcurrent is detected, the lamp illuminates, the voltage decreases, and the connected circuit remains protected. I have relied on this system for years, particularly because the power rating of the lamp posed challenges when connecting stronger lamps in high-power circuits. The concept I had envisioned for a long time has finally been realized.

This system comprises three lamps of 100W, 200W, and 300W respectively. Each lamp is associated with a switch, allowing me to select the desired lamp by turning off the others.

LAMP CONNECTION SCHEMATIC

Due to the uneven surface of the wall lamp, I removed the fixture from the hooks and mounted it onto the chipboard. I securely attached the switches using adhesive and silicone. Finally, I connected the crocodile clip and the switch to the two-wire lights, simultaneously cutting both the phase and neutral wires. This dual line cut and light setup is essential for safety purposes.

IMPORTANT: Several safety precautions must be taken. Firstly, it’s crucial to cover the connection points of the lamp and cable switches with silicone after soldering. The switches on the chipboard can be easily insulated with silicone. However, the cable switch requires more attention. We carefully wrap the switch with electrical tape, aiming to seal the silicone around the isolated solder joints.

A switched-mode power supply (SMPS) is an electronic power supply that utilizes a switching regulator to efficiently convert electrical power. Similar to conventional power supplies, an SMPS transfers power from a DC or AC source to DC loads, like personal computers, while adjusting voltage and current characteristics.

SMPS is a power supply system employing a switching regulator to efficiently transfer electrical power. It functions as a power supply unit (PSU) commonly used in computers to adjust voltage to the appropriate range for the system.