[Milsurplus] Ferro regulated PS for dyno spinner?

[Richard]

The answer is; maybe.  I have a PP-1104C/G power supply rated 11.5 to 
17.5 volts at 100 amps and 28 to 35 volts at 50 amps, 6% regulation at 
14 volts and 4% at 28 volts.  It has ferromagnetic feedback.  It starts 
and runs the 800-1 inverter for the TBW transmitter fine, (55 amps at 28 
volts key-down) but starting the ART-13 dynamotor results in chattering 
contactors and relays.  For battery charging or booster battery it would 
need a reverse current relay or blocking diode.

Richard, AA1P

On 09/05/2014 04:00 PM, Mike Hanz wrote:
> On 9/5/2014 3:36 PM, Hue Miller wrote:
>> I scavenged from an abandoned radio site, a GE built, ferroresonant 
>> 12V 35A DC supply.
>> It is a heavy sucker, maybe 45 lbs., and even has a choke inductor in 
>> it.
>> My question is, what happens when this kind of supply faces the heavy 
>> start load from
>> a dynamotor?
>
> It usually just grunts...they like a steady load near the rating but 
> won't flinch from a momentary overload current.  At lower current it 
> will hum, but that's normal.
>
>>   Does it also require a helper battery for dyno starting?
>
> Nope - it's brute force at its best.  Heavy iron!
>
> 73,
> Mike
> ______________________________________________________________