[ARC5] 24vdc power

[Charles]

> Hey guys,
> What's everybody using to provide 24vdc for your military radios? Two 12vdc supplies in series?  Home brew?  Do they make a 24vdc switching supply that will handle 10 amps or so?
> Thanks for your input,
>
> Richard kn7sfz
Anything with a dynamotor needs about five times the motor nameplate 
current for the starting surge...

I got a 2 KVA three-phase 115V 400 Hz rotary converter at a flea market 
but nothing I had was big enough to start it (rated at 27.5VDC at 115 amps!)

So I bought a 20 VAC, 5 KVA toroid transformer on ebay, a BFBR (big 
bridge rectifier), heat sink, a 220,000 uF cap, meters and shunts, and 
brewed up a 24-28V 120 amp brute force supply with 240 VAC input. THAT 
starts the converter all right. It doesn't even blink at smaller 
dynamotors :)

-Charles, WB3JOK/0