How to Use EZ-SFX: Examples, Pinouts, and Specs

The EZ-SFX is a compact power supply module designed to convert alternating current (AC) to direct current (DC), providing a stable and efficient power source for electronic circuits. This module is ideal for hobbyists, engineers, and professionals who require a reliable DC power supply for their projects. Common applications include powering microcontrollers, LED lighting systems, and small motors in devices such as DIY electronics, home automation systems, and custom-built gadgets.

• Input Voltage Range: 85VAC to 264VAC
• Output Voltage: 5VDC (typical)
• Output Current: Up to 2A (max)
• Power Rating: 10W (max)
• Efficiency: >80% at full load
• Isolation Voltage: 3000VAC / 1 min
• Operating Temperature: -40°C to +85°C

1. Connecting AC Input:

   • Connect the AC live wire to pin 1 (AC-L) and the neutral wire to pin 2 (AC-N).
   • Ensure that the input voltage is within the specified range to avoid damage.

2. DC Output Connection:

   • Connect your device's positive input to pin 4 (Vout+) and the negative input to pin 5 (Vout-).
   • Verify that the device's input current does not exceed the EZ-SFX's maximum output current rating.

3. Grounding:

   • Connect pin 3 (GND) to the earth ground if required for your application.

• Safety: Always ensure the power is off before making connections to avoid electric shock.
• Heat Dissipation: Provide adequate ventilation around the module to prevent overheating.
• Isolation: Maintain proper isolation between the AC input and low-voltage DC output to ensure user safety and circuit protection.
• Load Regulation: Test the output voltage under different load conditions to ensure it remains within acceptable limits for your application.

• No Output Voltage:

  • Check AC input connections for proper contact.
  • Verify that the AC input voltage is within the specified range.
  • Inspect the module for any visible damage or burn marks.

• Output Voltage Fluctuations:

  • Ensure that the load does not exceed the maximum current rating.
  • Check for loose connections at the output terminals.
  • Evaluate the ambient temperature to ensure it is within operational limits.

• Module Overheating:

  • Reduce the load if it is near the maximum power rating.
  • Improve airflow around the module or add a heat sink if necessary.

• Q: Can the EZ-SFX be used with input voltages lower than 85VAC?

  • A: The module is designed to operate within the specified input voltage range. Using it outside this range may result in improper operation or damage.

• Q: Is the output voltage adjustable?

  • A: The EZ-SFX provides a fixed output voltage. For adjustable output, an external regulator or a different module with variable output should be used.

• Q: How can I increase the output current capability?

  • A: To increase the current beyond the module's rating, you would need to use multiple modules in parallel, ensuring proper load sharing and thermal management.

// This example demonstrates how to use the EZ-SFX module to power an Arduino UNO.

void setup() {
  // Initialize the digital pin as an output.
  pinMode(LED_BUILTIN, OUTPUT); // Most Arduinos have an on-board LED on pin 13
}

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

// Note: The EZ-SFX module powers the Arduino UNO through its 5V pin.
// Ensure that the current draw from the Arduino and connected peripherals
// does not exceed the EZ-SFX's maximum output current rating.

Remember to adhere to the EZ-SFX's specifications and safety guidelines when using it to power any device, including an Arduino UNO. The example code provided is a simple blink sketch that assumes the Arduino is properly powered by the EZ-SFX module.