Want to Design Hardware with USB & battery operated with Current Capacity of 1.5-3A

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I want to make Design with USB & Battery (4XAA alkaline) Operated.

Design will work on USB when Battery available.

Design will work with battery only when USB supply is absent.

supply need to be switched automatically so design will get continuous power.

can anyone suggest any device or any solution for this?.

Hoping for quick and best resolution
 

Hi,

There are dedicated USB power switches...just go to the distributor of your choice and do a search.

Klaus
 

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