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[SOLVED] Why snubber circuit is used at output of a relay switch?

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shantilal.s50

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I found that a snubber circuit is used at output of a relay switch.
Here snubber circuit as shunt at o/p which is combination of a "Resistor and Capacitor"
 

ch wazir

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I found that a snubber circuit is used at output of a relay switch.
Here snubber circuit as shunt at o/p which is combination of a "Resistor and Capacitor"

resistor and capacitor combination is used to quench the spark,it is a spark quenching arrangement,if the same is not used the contact/contacts of a relay may get spark and burn.regards
 

atripathi

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In other words- You can not suddenly interrupt current from inductive circuit, if this the case then you should provide alternate path to current and snubber does precisely the same.
 

Ogu Reginald

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The reason why snubber network is placed at the output of a relay is to suppress transient. In other word, it is to protect the circuit from sudden changes in voltage (dV/dt). It is worth noting that the type of transient that the snubber is effectively working against is initiation transient.
Initiation transients are produced when a circuit is originally dead is energized suddenly and very fast (the switching of the relay).
 
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