you can use LM741 chip as | Electronics › Electronics › Controlling 12VDC 5A relay from voltage signal? › you can use LM741 chip as August 14, 2014 at 7:38 am #12012 Ashutosh BhattParticipant you can use LM741 chip as comparator. and set its input voltage as you require. you can set the output high till input is more then 6 V and set output low when input is lower than 1.5 V. use this output to energize relay coil.
