Tags: Relay, 5v, 10A, 240V, AC, 5A, 24V, DC

Relay 5v , 10A 240V AC 5A 24V DC

  • 6.00 AED
    • Ex Tax:6.00 AED
    • Product Code: SRD-05VDC-SL-C
    • Availability: In Stock
    A relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current. The heart of a relay is an electromagnet (a coil of wire that becomes a temporary magnet when electricity flows through it). You can think of a relay as a kind..


    A relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current. The heart of a relay is an electromagnet (a coil of wire that becomes a temporary magnet when electricity flows through it). You can think of a relay as a kind of electric lever: switch it on with a tiny current and it switches on ("leverages") another appliance using a much bigger current. Why is that useful? As the name suggests, many sensors are incredibly sensitive pieces of electronic equipment and produce only small electric currents. But often we need them to drive bigger pieces of apparatus that use bigger currents. Relays bridge the gap, making it possible for small currents to activate larger ones. That means relays can work either as switches (turning things on and off) or as amplifiers (converting small currents into larger ones).



    Specification :

     Power Relay 10A/240V AC, 5A/24V DC

    How relays work

    Here are two simple animations illustrating how relays use one circuit to switch on a second circuit.

    A simple animation showing how a relay uses electromagnetism to link two circuits.

    When power flows through the first circuit (1), it activates the electromagnet (brown), generating a magnetic field (blue) that attracts a contact (red) and activates the second circuit (2). When the power is switched off, a spring pulls the contact back up to its original position, switching the second circuit off again.

    This is an example of a "normally open" (NO) relay: the contacts in the second circuit are not connected by default, and switch on only when a current flows through the magnet. Other relays are "normally closed" (NC; the contacts are connected so a current flows through them by default) and switch off only when the magnet is activated, pulling or pushing the contacts apart. Normally open relays are the most common.

    Here's another animation showing how a relay links two circuits together. It's essentially the same thing drawn in a slightly different way. On the left side, there's an input circuit powered by a switch or a sensor of some kind. When this circuit is activated, it feeds current to an electromagnet that pulls a metal switch closed and activates the second, output circuit (on the right side). The relatively small current in the input circuit thus activates the larger current in the output circuit:

    Animation showing how an electromagnetic relay works

    1. The input circuit (blue loop) is switched off and no current flows through it until something (either a sensor or a switch closing) turns it on. The output circuit (red loop) is also switched off.
    2. When a small current flows in the input circuit, it activates the electromagnet (shown here as a dark blue coil), which produces a magnetic field all around it.
    3. The energized electromagnet pulls the metal bar in the output circuit toward it, closing the switch and allowing a much bigger current to flow through the output circuit.
    4. The output circuit operates a high-current appliance such as a lamp or an electric motor.



    This Video tutorial will teach you how two connect relay to an Arduino :


    This code is to drive (turn ON and turn OFF) a relay using Arduino code.

    
    int relayPin = 2;// define pin for relay
    
    void setup() {
      // Robojax.com relay tutorial 20181012
      pinMode(relayPin, OUTPUT);
      Serial.begin(9600);// initialize serial monitor
      Serial.println("Robojax.com Relay Module");
      digitalWrite(relayPin, HIGH);// turn relay ON
      delay(2000);// wait for boot
    }
    
    void loop() {
      // Robojax.com relay tutorial 20181012
      digitalWrite(relayPin, HIGH);// turn relay ON
        Serial.println("Relay ON");
      delay(300);// wait for 5 seconds
       
      
      digitalWrite(relayPin, LOW);// turn relay OFF
           Serial.println("Relay OFF");
      delay(1000);// wait for 3 secons
    
    }