Name: SRD-6VDC-SL-C Songle Relay T73-6V 5pins
SKU: 457146
Price: 2.34 EUR
Availability: BackOrder

Description

SRD-6VDC-SL-C Relay Songle T73-6V 5pins

The relay is a current control switch device. The principle of operation of the relay is that when the relay coil is electrified, the iron core in the coil produces a powerful electromagnetic force, lifting the armature to actuate the contacts, connecting 1, 2, disconnecting, from 1, 3 to. After the coil power supply, a spring restores the contacts, connecting 1, 2, passing through, 1, 3, disconnecting. As long as the need to control the circuit between the contact between 1, 2 (called normally closed contact) or the contact between 1 and 3 (indicated as normally open contact), would be controlled using the relay to 2. The purpose of pins 4, 5 and the cc voltage of the coil on both ends.

On the other side of the foot, there is a common terminal output among the three legs, the other two pins are coil ends, that is, the ends of the unit. The other two feet were often open contacts normally closed. The following diagram: A and B command pedal electric 1 foot to the control circuit and A foot out of the 2 or 3 feet (3 feet normally closed, normally open 2 feet)

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Tutorial: How to use SRD-6VDC-SL-C Songle Relay T73-6V

The SRD-6VDC-SL-C relay is an electronic component very useful for controlling electrical devices from Arduino or other microcontrollers. Ideal for beginners who want to learn how to manage the power supply of external loads.

What you need

Arduino Uno
USB cable
Breadboard
6V power supply

Steps

Connect the COM, NO and NC pins of the relay to the breadboard.
Connect the VCC pin to the +6V of the power supply.
Connect the GND pin to the -6V of the power supply.
Connect the IN1 pin to a digital pin of Arduino (e.g., 7).
Open Arduino IDE and connect the Arduino to the USB port of the computer.
Upload the following sketch to the microcontroller.

Example code

void setup() {
  pinMode(7, OUTPUT);
}

void loop() {
  digitalWrite(7, HIGH); // Attiva il relè
  delay(1000);
  digitalWrite(7, LOW); // Disattiva il relè
  delay(1000);
}

Mini project

Create an automatic lighting system that turns on a lamp connected to the relay when a light sensor is activated.

Common mistakes

Connect the IN1 pin to an analog pin.
Do not check the VCC voltage of the relay.
Use a load that is too heavy without an intermediate resistor.
Ignore the polarity of the power connector pins.

Recommended accessories

Breadboard
Jumper wires
Light sensors

Frequently asked questions

How can I control multiple relays?
Use a multiplexer module or connect the relays to other digital pins on the Arduino.

The relay is not working, what to do?
Check all connections and the relay voltage. Try to upload a simple sketch to test it.

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