one for thye electrronics experts? need some help

jon218white

jon218white

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Joined
Jul 18, 2019
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135
need some help with a circuit wondere if anybody can help me, im trying to make a anti spark switch which turns on high cuttent turns on a 12s battery, ive designed a momantry on off part of the circuit which turns on 2 mosphets, but i need a turn off after say 5 mins on no use on the battery so i soppose it must monitor current? or maby some other way maby, or is there a small pcb available with this somewhere [/size]
 
So you're looking for a timer that runs for approx 5 mins & switching circuit off when little/no power is being drawn?
So a 5 min timer with a reset input and a current sense circuit to feed the reset?
 
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