Hello All, I am trying to integrate 5V relay coil with ratings as 7A 250V with arduino board. I have seen most of the relays with 12 V coil inputs. I have a relay which can be activated with 5V. I want to check if I can interface ULN2003A with arduino and 5V relay coil.
ULN2003A pin 9 talks about connecting this pin to 12V supply whereas my relay needs only 5V.
I created the interface as shown in the picture. With this I am able to activate the relay from arduino with the help of digital pin 3 from arduino.
Can someone help me to validate the attached circuit if it is correct way of doing or is there an alternative way to achieve this.