[Milsurplus] [Boatanchors] 12-24 vdc converters and toroid cores - Summar...

[WA5CAB at cs.com]

Yep, close enough for government work.

Actually there is one more option not yet mentioned.  Which would also 
involve a transformer operating at higher than line frequencies.  I saw an 
article similar to this in probably a late 50's or early 60's vintage QST.  It 
involves pulling the alternator and getting inside of it.  If you bring out 
the three or four wires from the three-phase stator to a transformer, 
rectifier and regulator, and connect that to the upper 12 volt battery, the second 
battery will be able on charge while being used, and you won't run into the 
problem of having to shut down the 24 volt system to recharge it.

The actual article I remember produced something like 1250 VDC to run a 
medium power HF transmitter.  But the concept is similar, except for the 
charging regulator, and if anyone were going to attempt this, it might be 
worthwhile finding the article.  About all else I recall is that the photograph of 
the transformer was in black and white.

In a message dated 10/6/2009 1:46:55 PM Central Daylight Time, 
wh7hg.hi at gmail.com writes: 
> That said, I've been interested and educated by the posts thus far.
> From what I can gather from them:
> 
> I need to add, subtract, multiply and/or divide batteries connected by
> diodes, relays and/or quantum entanglement to charge from a single 12
> volt alternator, a single 24 volt alternator, a single dual voltage
> alternator, multiple alternators and/or the Force and coupled to the
> load directly, via switches, via relays, via The Ring.
> 
> Is this about right?
> 
> Best regards,

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480