How to Use Ali AC-24VDC 70W 3A Power Supply: Examples, Pinouts, and Specs

The Ali AC-24VDC 70W 3A Power Supply (Manufacturer Part ID: WX-DC2407) is a reliable and efficient power supply unit designed to convert alternating current (AC) to direct current (DC) at a stable output of 24 volts. Manufactured by Shenzhen Smart Electronics Co., Ltd, this power supply is capable of delivering up to 70 watts of power with a maximum current of 3 amps. It is ideal for powering a wide range of electronic devices, including industrial equipment, LED lighting systems, and DIY electronics projects.

• Powering industrial control systems and automation equipment.
• Supplying power to LED strips, panels, and other lighting systems.
• Providing a stable DC voltage for DIY electronics and prototyping.
• Operating small motors, actuators, and other electromechanical devices.
• Serving as a power source for Arduino, Raspberry Pi, and other microcontroller-based projects.

The power supply has clearly labeled input and output terminals for easy connection. Below is the pin configuration:

1. Input Connection:

   • Connect the L terminal to the live wire of the AC mains supply.
   • Connect the N terminal to the neutral wire of the AC mains supply.
   • Optionally, connect the GND terminal to the earth ground for safety.

2. Output Connection:

   • Connect the +V terminal to the positive input of your load or circuit.
   • Connect the -V terminal to the negative input of your load or circuit.

3. Power On:

   • Ensure all connections are secure and insulated.
   • Plug the power supply into the AC mains and switch it on.

4. Load Considerations:

   • Ensure the total power consumption of the connected load does not exceed 70W.
   • Avoid short circuits or reverse polarity connections to prevent damage.

• Ventilation: Ensure adequate airflow around the power supply to prevent overheating.
• Mounting: Secure the power supply in a stable position to avoid vibrations or accidental disconnections.
• Safety: Always disconnect the power supply from the mains before making any wiring changes.
• Testing: Use a multimeter to verify the output voltage before connecting sensitive devices.
• Arduino Compatibility: This power supply can be used to power Arduino boards via the VIN pin or an external voltage regulator.

To power an Arduino UNO with this power supply, follow these steps:

1. Connect the +V terminal of the power supply to the VIN pin of the Arduino.
2. Connect the -V terminal of the power supply to the GND pin of the Arduino.
3. Ensure the output voltage is set to 24V DC.

Here is an example Arduino sketch to blink an LED while powered by the Ali AC-24VDC 70W 3A Power Supply:

// Blink an LED connected to pin 13 of the Arduino UNO
// Ensure the Arduino is powered via the VIN pin with 24V DC

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 this power supply be used outdoors?

   • No, this power supply is not waterproof and should only be used in dry, indoor environments.

2. What happens if the load exceeds 70W?

   • The power supply's overload protection will activate, shutting down the output to prevent damage.

3. Can I adjust the output voltage?

   • No, the output voltage is fixed at 24V DC and cannot be adjusted.

4. Is it safe to leave the power supply on continuously?

   • Yes, as long as the power supply is operating within its specified limits and has adequate ventilation.

5. Can I use this power supply to charge batteries?

   • This power supply is not designed for direct battery charging. Use a dedicated battery charger for this purpose.

This concludes the documentation for the Ali AC-24VDC 70W 3A Power Supply. For further assistance, please contact Shenzhen Smart Electronics Co., Ltd or refer to the product manual.