[Milsurplus] Re: Cheap 400hz power

[J. Forster]

Re-post from Armyradios:


> Hi,

> yes, 400 HZ inverters and converters are available at surplus places and as John points
> out keep a look out for that plain looking box with cirular connectors on it.  Currently
> I use two 400 Hz supplies on the test bench.  One is a Unitron PS-65-228 (which is a
> classic big black  box with one MS connector; plain looking but one of my most used 400
> Hz supplies).  In is 28 VDC, out is 3 phase 400 Hz 750 VA.  The other  is a Behlman
> KBT-100-436C.  Input is 120 VAC 60 HZ 1 phase, out is  0-270 VAC, 1000 VA, 1 phase, 45
> Hz-10KHz.  These supplies are excellent for testing avionics test sets and in the radio
> department things like the PRC-47 AC supply which of course is 120 VAC 400 HZ  input.
> I got both of these supplies non-working condition and both Unitron and Behlman had
> EXCELLENT tech support and supplied full schematics on their equipment.  Pretty good
> since both of these supplies are no longer made!!! (new models took their place)

> Good luck to the list member(s) trying to convert that 60 Hz supply to 400 Hz... should
> be a good project!
> Erik
>