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Switching can be defined as the change in state whether it be an analog, digital, or mechanical device. For digital devices, switching can be defined as a transition from HIGH to LOW or vice versa. For analog devices, switching can be defined as a change of operation within a transistor. Mechanical device examples include physical light switches or button switches. Ultimately, switching interrupts current from going into another conductor path.

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Switching between battery and USB using diode OR logic

Another solution is the circuit below. It has also been discussed in Stackexchange before. I'm just not certain what the advantages and disadvantages are when using this circuit compared with the cir …
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