Re: Need a circuit that switches ON when a 5 volt source drops to 4 volts or less
Use MC and relay with NC and NO contacts. The MC keeps the relay open, until the voltage threshold is reached. Not very elegant but you can set any threshold voltage and it will work. You need NEGATIVE logic.
Use MC and relay with NC and NO contacts. The MC keeps the relay open, until the voltage threshold is reached. Not very elegant but you can set any threshold voltage and it will work. You need NEGATIVE logic.
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