230v relay switching problem with rf

[Vijayakumarbe]

Hi,

I'm facing relay switching problem by using RF.I'm using the relay in RF Receiver side.I tried with RC snubber circuit in relay coil and relay contacts.But i can't find any solution for that.Relay switching time differs for snubber circuit(tried with different R and C combinations).

I couldn't switch the relay for right timing through RF receiver. Pls give solutions for this......

- - - Updated - - -

hi,

Here i'm using industrial gong bell as a load.

 

[jiripolivka]

I do not see where a "timing problem" can be caused by your circuit. Can you give more details on the driving signal and the relay itself? How much the "timing problem" is in milliseconds?

 

[Vijayakumarbe]

Without load relay on/off is fine through RF.When we connect the load relay turned on at the right time if RF signal received.But couldn't turn off right time whether it receives RF signal.

 

[FvM]

But couldn't turn off right time whether it receives RF signal.

I fear it's completely unclear what this statement means.

 

[mdorian]

The relay might be under-dimensioned for the load , use a bigger one. You can try also to put two or three diodes in series in place of D4, this way the switch off time is shorter.

 

[Pulsetronics]

It seems the load current is much, Try to use a more higher current relay. Try to fix a 470u in between the relay coils terminals