hello friends i am new here i want to create a circuit that do auto switching in nanosecond i want to mosphet not relay is it possible if yes what should i do .. the main use of it to automatically switch to battery when there is no electricity (adaptor off ) when the adopter is on so the load transfer to the adopter and charge the battery this project for 12v router i need help 
""Hello how are you i am working on a project making ups for the router so i am stuck at auto switching how can i create it without relay (because its delay time restart the router) so which things i need to create the circuit .... there is 2 power source 12v adopter and 12v battery pack so i want to use 12v adopter as a primary power source and when the electricity cut the modem switched to battery without to much delays that restarts it .. please i need help""
[ Mod Note combined 2 intro posts from 2 threads on same subject]
""Hello how are you i am working on a project making ups for the router so i am stuck at auto switching how can i create it without relay (because its delay time restart the router) so which things i need to create the circuit .... there is 2 power source 12v adopter and 12v battery pack so i want to use 12v adopter as a primary power source and when the electricity cut the modem switched to battery without to much delays that restarts it .. please i need help""
[ Mod Note combined 2 intro posts from 2 threads on same subject]
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