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Answer by Bimpelrekkie for How does the PNP transistor in this IR receiver...
So you're thinking that the PNP is "upside down"?I agree with you, note how the arrow in the emitter points in the "wrong" way.However A PNP still works as a PNP like that!Only it will have a much...
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Answer by Olin Lathrop for How does the PNP transistor in this IR receiver...
This circuit doesn't make a lot of sense.I think the intent was for Q1 to invert the output signal of the IR receiver. The IR receiver has a open drain (or open collector) output. It actively drives...
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How does the PNP transistor in this IR receiver circuit work?
(source: https://circuitdigest.com/electronic-circuits/remote-controlled-light-switch)How does the BC557 PNP transistor in this circuit work?Based on the information about PNP transistors that I got so...
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