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IR Beam Circuit

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J

joebanks

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Hello, well I’m having a problem with this IR Beam Circuit receiver
**broken link removed**

It has the word VREF of some of the terminals, I understand that that stands for Voltage Reference however when creating this circuit on a program what should I attach this VREF too? My guess would be to connect it too the +V but I am unsure. Help anybody?
 
It means all the points labled Vref should be tied together. IC1D is the Vref source.
 
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