Yet another diode revision; minimizes voltage drop by protecting the microcontroller and modem in parallel, while still blocking power from VIN, allowing the battery to charge, and making safe all combinations of USB cable dis/connected, charger dis/connected, power switch closed/open
Yet another diode revision; minimizes voltage drop by protecting the microcontroller and modem in parallel, while still blocking power from VIN, allowing the battery to charge, and making safe all combinations of USB cable dis/connected, charger dis/connected, power switch closed/open

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