Opto-Thermo Control Relay Switch with IC 741

This is 741 Opto-Thermo Control Relay switch circuit. It is a simple electronic circuit using 741. I love a 741 op-amp.  Though very ancient, it still has many uses.  This can use for detecting light and the temperature.

By have work various instructions very much. And have onely observations be I uses IC 741 then can insist that. Must easy and economize. For electric appliances supervision as a result command change , Relay there.

Circuit diagram of Opto-Thermo Control Relay Switch with IC 741

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