High inrush triac protection circuit

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vicky.pace

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Dear All,

I am using BTA41 triac to operate 115V .75 HP motor. But as I switch on, the triac blows off. please let me know hw I can protect the same as I am alredy using a suitable snubber circuit.

regards

Vicky
 

Hi vicky.

What snubber are you using?
 

Hi,

I am using here RC Snuber.

Vicky
 

RC snubber is for filtering voltage spikes, it won't do anything to limit in rush current.
What you need is a suitably sized choke in series of your triac
For example a toroid wound with wire.
 

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