Dual power supply

Airtop has two DC power inlets that allow power supply redundancy. In case one power supply fails Airtop switches automaticall to the other PSU and continues working.

The dual power supply circuit consists of two high-power transistors, one for each power inlet, that allow current to flow only from the PSU to the Airtop, and not backwards. Thus it prevents current-flow from one PSU to the other, while allowing two, or either one of the power inlets to be active.