CrazyEngineers
CrazyEngineers

  • Use of diode accross the Relay....why?

    fisfiseani

    Member

    Updated: Oct 27, 2024
    Views: 886
    Dear all,
    Will you please tell me the reason of using diode across the relay.what is the purpose of using it?
    0
    Replies
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.
Replies

  • Ramani Aswath

    Member • Aug 17, 2012

    The coil of the relay is inductive. When the relay is switched off a reverse voltage will appear across the terminals. This may cause some damage or disturbance to the rest of the circuits. A reverse biased diode across the coil shorts out this spike.
    Are you sure? This action cannot be undone.
    Cancel

  • fisfiseani

    Member • Aug 17, 2012

    bioramani
    The coil of the relay is inductive. When the relay is switched off a reverse voltage will appear across the terminals. This may cause some damage or disturbance to the rest of the circuits. A reverse biased diode across the coil shorts out this spike.
    Thanks for your answer sir.
    Are you sure? This action cannot be undone.
    Cancel

  • Harshad Italiya

    Member • Aug 17, 2012

    It is also called Freewheeling Diode :- <a href="https://en.wikipedia.org/wiki/Flyback_diode" target="_blank" rel="nofollow noopener noreferrer">Flyback Diode</a>
    Are you sure? This action cannot be undone.
    Cancel

  • ravi sidhu

    Member • Aug 26, 2012

    Relays are work on physical mutual Induction process its need some time our required time hence in case of diode no need of physical contact and also no need of protecting layer,and use is easy and no need of higher voltage to operate it occuracy more
    Are you sure? This action cannot be undone.
    Cancel
Home Channels Search Login Register