[Milsurplus] 12 VDC to 110VAC 400 hz question

[boeing377 at aol.com]

Message: 5
Date: Mon, 13 Mar 2006 02:33:51 -0500
From: Barry Hauser <barry at hausernet.com>
Subject: Re: [Milsurplus] 400 Hz inverter/converter
To: milsurplus at mailman.qth.net
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Anybody know of an available 60 to 400 Hz AC power converter or 12/24 
vdc to
120v 400 Hz inverter -- or easy-to-homebrew circuit?  Is it feasible to
modify a 12 v to 120 V 60 Hz inverter of the kind sold for use in cars?

Put another way -- what do you guys use to power aircraft type gear 
designed
for 115 vac 400 Hz?

Barry



Barry,

There were many hundreds of 12 VDC to 110 VAC 400 hz 350 watt solid 
state  inverters made for suprlus APN 9 Loran A sets suring the 1960s. 
The primary mfrs were Linear Systems and Topaz. None are used today so 
there are a lot sitting in junkpiles somewhere. If you put a wanted ad 
in Fishermans News (published in Seattle) you'd find a couple. They 
retailed for $225 back in the day, but $50 would be a fair price these 
days. Output is sqaure wave and frequency varied unit to unit, I saw 
380 hz to 430 hz.

There is an absolute bargain 24 VDC to 110 VAC 400 hz solid state 
inverter that appears on eBay regularly, mil surplus. They usually go 
for about $ 50-65, are capable of 750 watts and are xtal controlled for 
precise 400 hz. Modern design using integrated circuits etc.

Mark