How to Use SMPS 12v 15A: Examples, Pinouts, and Specs

The TNK SMPS 12V 15A is a high-efficiency Switch Mode Power Supply designed to convert AC mains voltage into a stable 12V DC output. With a maximum current capacity of 15A, this SMPS is ideal for powering a wide range of electronic devices, including LED strips, CCTV systems, industrial equipment, and other DC-powered applications. Its compact design, high efficiency, and reliable performance make it a popular choice for both hobbyists and professionals.

• Powering LED lighting systems (e.g., LED strips, LED panels)
• Supplying power to CCTV cameras and DVR systems
• Driving DC motors in industrial or hobbyist projects
• Providing stable power for microcontroller-based systems
• General-purpose DC power supply for laboratory or workshop use

The following table outlines the key technical details of the TNK SMPS 12V 15A:

The TNK SMPS 12V 15A has the following input and output terminals:

1. Wiring the Input:

   • Connect the AC mains supply to the L (Live) and N (Neutral) terminals.
   • Ensure the GND terminal is connected to the earth/ground for safety.

2. Wiring the Output:

   • Connect the V+ terminal to the positive input of your load (e.g., LED strip, motor).
   • Connect the V- terminal to the negative input of your load (GND).

3. Adjusting the Output Voltage:

   • Use the ADJ screw to fine-tune the output voltage within ±10% of 12V (10.8V to 13.2V).
   • Use a multimeter to monitor the output voltage while adjusting.

4. Powering On:

   • Double-check all connections for correctness and safety.
   • Turn on the AC mains supply to power the SMPS.

• Load Capacity: Ensure the total load does not exceed 15A to prevent overloading the SMPS.
• Ventilation: Install the SMPS in a well-ventilated area to prevent overheating.
• Safety Precautions: Always disconnect the SMPS from the mains supply before making any wiring changes.
• Voltage Adjustment: Avoid excessive adjustment of the ADJ screw to maintain stable operation.
• Fuse Protection: Use an appropriate fuse on the input side for added safety.

The TNK SMPS 12V 15A can be used to power an Arduino UNO via a DC-DC step-down converter (e.g., a buck converter) to step down the 12V to 5V. Below is an example wiring and code:

1. Connect the V+ and V- terminals of the SMPS to the input of the buck converter.
2. Set the buck converter output to 5V using its adjustment screw.
3. Connect the 5V output of the buck converter to the Arduino UNO's 5V and GND pins.

// Example code to blink an LED connected to pin 13 of the Arduino UNO
// Ensure the Arduino is powered via the SMPS through a buck converter

void setup() {
  pinMode(13, OUTPUT); // Set pin 13 as an output
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. Can I use this SMPS to power a 5V device?

   • Yes, but you will need a DC-DC step-down converter to reduce the 12V output to 5V.

2. Is the SMPS suitable for outdoor use?

   • No, this SMPS is not weatherproof. Use it in a dry, indoor environment.

3. What happens if I exceed the 15A limit?

   • The SMPS will activate its overload protection and shut down to prevent damage.

4. Can I use this SMPS to charge a 12V battery?

   • It is not recommended, as the SMPS does not have the necessary charging circuitry to safely charge batteries.

By following this documentation, you can safely and effectively use the TNK SMPS 12V 15A in your projects.