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220v AC RELAY

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wolverine123

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Hey guys I currently have two meters for electricity, one single phase and the other 3-phase, now here in my country our light goes out everyday so when one (either 3-phase or single phase) is out we just convert to the other using a manual converter, Now I wanted to make this automatic so am using 220v AC relays to make it possible. Now it does change when one light is out but the problem is that its really quick which will harm my pc and tv etc. So i thought of adding a delay to it of ANY kind, just a small 4 or 5 seconds delay. Can anyone help me on how i can do this without buying expensive stuff for it :) thanks
 
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