Complicated adapter question wall male adapter for usb c female

By Ronald9518 ·
Tags: Mobility
Hi, bought a certain electronic device (blushield cube) (which by the way includes adapters for all continents), but it requires wall sockets. I want to use it when I'm on the go. I have a very good power bank (Portable-RAVPower-20100mAh) that I think may work, but it only charges via usb c and usb micro. What I want is to charge the via the plug that goes into the wall socket with my powerbank so I need an adapter. From Amazon.co.uk would be best
So: US wall male plug to adapter that has a US wall female input and which has a USB-C female to plug in the battery bank.
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Not Pratical

by TheChas In reply to Complicated adapter quest ...

If I understand what you want to do, is connect your 5 volt power bank and create 120VAC main power for a device.
While it can technically be done, you just can't make a practical usable device to do this.
Lets presume that someone did design an 80% efficient DC to AC convertor. This would be excellent efficiency and you are more apt to end up with around 50-60% efficiency.
USB-C limits you to 5 volts and 3 amps, or 15 watts of source power.
At 80% efficiency, the device could output up to 12 watts. That would be 100 milli-amps of current at 120 VAC. At 50% efficiency, the output current drops to 62 milli-amps.
That just is not very much power for what the device would cost, and the heat it would produce.

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