Power multiple devices from two micro USB suppliesDesigned by 8086 Consultancy in United Kingdom
Power from each Micro USB connector goes via a MOSFET "Ideal Diode" which is then connected to a Dual Female USB A connector. Data from each Micro USB port is connected to one of the USB Type A con...Read More…
Power from each Micro USB connector goes via a MOSFET "Ideal Diode" which is then connected to a Dual Female USB A connector.
Data from each Micro USB port is connected to one of the USB Type A connectors (labelled TOP / BOT on the bottom of the PCB).
The ideal diode prevents power from being fed back into either Micro USB port (power supply). It will draw power from the supply with the highest voltage and if the voltages equalize (due to the current draw) it will share the load on the power supplies connected to both Micro USB connectors (droop method).
Can be used to Create a redundant power supply for a Raspberry Pi (using any mix of mains/battery USB supplies). Load share with multiple supplies with a similar specification (droop method). Keep your Pi (or other USB powered devices) running whilst switching between power supplies.
Please Note: FOR USE ONLY WITH 5 VOLT supplies and devices - Using anything else may damage your power supply/charger/USB devices and the Dual Supply board. PCB and LED colour may vary. Raspberry Pi/USB Power Monitor/USB Load not included.
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