[Elphel-support] 48volts vs 12volts

[Andrey Filippov]

Tom,

The "low voltage" camera version has very low margin for the 12V - the
internal DC-DC is rated for 9-36V, but there is a diode bridge on the input
that raises lowest input voltage to some 10.5. So if the actual voltage is
lower than 12, and/or camera uses HDD that needs extra current for spin-up
and the cable is long - you can get camera reboots caused by internal
voltage dropping below acceptable level. So it is better suited for 19V
(many laptop batteries) or 24V (on-board power for many flying machines). If
you plan to use it in the car - I would recommend 48V - car power inverters
are now easily availble and then you can use any regular mid-span PoE power
supply or power injector.

Andrey
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