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I am trying to follow and wire up the circuit given here. The explanation is in this page.

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In the circuit, IR1 is the component which has an IR receiver connected to a relay.

  • From my understanding of the circuit, relay is turned ON when the IR receiver receives an IR pulse. Is my understanding correct?

  • I am using an TSOP1738 IR receiver and this relay. How do I connect the receiver to the relay? I understand that relay has two states, normally open and normally closed along with a common terminal. With respect to the circuit shown, which of these should be connected to the IR receiver?

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