How do NPN transistors work?

The standard bipolar or BJT transistor is presented in two basic forms. An NPN type (Negative-Positive-Negative) and a PNP type (Positive-Negative-Positive). The most commonly used transistor configuration is the NPN…

How does IR sensors work?

An infrared sensor is an electronic tool that is used to detect certain environmental characteristics by emitting and / or detecting infrared radiation. Infrared sensors can also measure the heat…

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