Forum: µC & Digital Electronics sharp s202s02 as LED switch/controller

von tom holzwurm (Guest)

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Hi guys
still having several relay boards on stock based on sharp s202s02 
SSrelays, I'm looking for use cases. The relays have a VDR as well as a 
22nF/47Ohm snubber parallel to the triac.
Not surprisigly I found that LED lights don't get switched fully off, as 
well as e.g. Switch Mode power supplies. Obviously the small current via 
the snubber is sufficient to power on such devices from time to 
time,which isn't acceptable. My question: is it correct that the the 
snubber ( not the VDR ) could be removed in case of load like a simple 
LED or a state of the art PSU ?
Because no inductors involved can harm the triac ?
Or is there a better solution ?
Of course I know the alternatives like mechanical relays or photo 
I simply want to recycle the existing boards.

Thanks in advance for your advice,


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