shut down circuit needed

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Emmanuel Akujobi

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please am designing an inverter using sg3524 and i really need a shut down circuit at a battery voltage 10.5V,i need help please.
 

A transistor can be adjusted to operate a relay.

Screenshot:



You probably want a certain amount of hysteresis. This is provided by the relay itself.

A relay is a convenient way to do the switching, although it is not the only method.
 

You could just use an external UVLO detector to manipulate the shutdown pin of the controller.
 

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