l, other components will remain as is except the relay which should be 24V rated.DeleteReplyDebashees SikderJanuary 17, 2014 at 3:37 PMSir, Can I use this circuit with sg3525 without relay?I am thinking that I can use a PNP transistor , am I right?ReplyDeleteRepliesSwagatam MajumdarJanuary 18, 2014 at 11:13 AMThe above circuit is suitable only with a relay, for 3524 IC only an opamp circuit would