On Jun 13, 9:49 am, Dave <f...@coo.com> wrote:
> I'm looking to use a Sun Netra T1 onboard an aircraft where the supply
> is 120 V 400 Hz
>
> The specs on the Netra T1 are:
>
> 100 - 240 VAC, 47 - 63 Hz, 2 A (max)

Simplest and easiest: http://www.elect-spec.com/freqchgr_a.htm#E

Next: Find a model 100; it had a DC power supply 40->70 VD, 4 A max.
input. Use
a 400 Hz Variac (http://www.elect-spec.com/variac_400.htm) to reduce
the voltage
to the desired level, and rectify to produce the desired input
voltage. If it turns out that
you really have single phase (unlikely), you'll want some caps to
smooth things out.

None of this equipment is air rated, of course... remember that the
T1 is thermally limited
to 10,000 ft elevation during operation.

The odd of the standard AC switching power supply coping w/ 400Hz
input is low.