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Step 7Plug it In.
Put the LM339 chip into the socket.
Plug in the battery and see if it works.
It should work.
If it doesn't do anything at first, check the power switch. It might be off. If it still doesn't do anything, then it is time to troubleshoot by double-checking your connections.
Plug in the battery and see if it works.
It should work.
If it doesn't do anything at first, check the power switch. It might be off. If it still doesn't do anything, then it is time to troubleshoot by double-checking your connections.
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