[TenTec] paralleling power supplies to run Herc II

[Greg S]

Has anyone used one of the high-energy, multi-farad capacitors (used by the car-audio crowd),  near the amplifier to support amperage peaks, and avoid voltage drop? Just curious, mostly.

73-
Greg, KC8HXO


--- On Mon, 6/20/11, Ken Brown <ken.d.brown at hawaiiantel.net> wrote:

> From: Ken Brown <ken.d.brown at hawaiiantel.net>
> Subject: Re: [TenTec] paralleling power supplies to run Herc II
> To: k9yc at arrl.net, "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Date: Monday, June 20, 2011, 4:42 AM
> 
> 
> 
> > On 6/19/2011 2:24 PM, Allan Taylor wrote:
> >> I finally picked up a 2nd 50A Astron power supply
> to make a pair. Are
> >> there any issues in paralleling these to run the
> Herc II? I am going
> >> to verify that the terminal voltage is identical
> within .01V.
> > 
> > I did that and it worked just fine.  The Herc II
> power connector is 
> > wired so that you can easily have one of the supplies
> feed half of the 
> > amp and the other supply feed the other half.  I
> DID strap the 
> > regulators together, using the banana connector. 
> I ran two #12 reds and 
> > blacks from each supply to the amp to keep the IR drop
> low. I used two 
> > RS70s. One was NOT enough. :)
> > 
> > Astron RS50 are not rated at 50 amperes continuous,
> but rather 50 amps 
> peak. Exactly what that means as I do not know. I suspect
> that two 
> Astron RS50 power supplies may work with a Hercules II in
> SSB service, 
> as long as there is not much compression used. Higher power
> density 
> resulting from an RF speech processor or other processing,
> or even the 
> dahs in low speed CW could be problematic. Please let us
> know how it 
> works out.
> 
> Two RS70, which claim 70 amps peak and 50 amps average,
> would be a 
> better choice.
> 
> DE N6KB
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