A light detecting book light.

Poincare1

Firstly, the book light works fine. I'm also attaching a circuit diagram.

I don't really understand why the emitter of the transmitter (its marked with an E) takes in the current. Could someone explain to me how this circuit works?

MATLABdude

Quote by Poincare1

Firstly, the book light works fine. I'm also attaching a circuit diagram.

I don't really understand why the emitter of the transmitter (its marked with an E) takes in the current. Could someone explain to me how this circuit works?

There's a circuit diagram?

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Poincare1	A light detecting book light. Tweet Firstly, the book light works fine. I'm also attaching a circuit diagram. I don't really understand why the emitter of the transmitter (its marked with an E) takes in the current. Could someone explain to me how this circuit works?