[Boatanchors] [ForSale-Swap] Power supply question

[D C *Mac* Macdonald]

I think your conclusion is the correct one.
 
I imagine that theoretically you COULD parallel
the outputs from two power supplies, but you
would most likely have to use ONE common system
of regulation to set both power supplies to give
EXACTLY the same output.
 
It probably would cause you more grief than you
would want to deal with.

* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
* * * * * * * * * * *
 
 

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> From: rayfrijr at msn.com
> To: forsale-swap at mailman.qth.net; boatanchors at mailman.qth.net
> Date: Tue, 3 May 2011 11:53:59 -0600
> Subject: Re: [Boatanchors] [ForSale-Swap] Power supply question
>
>
> After doing a little bit more research online, I've come to the conclusion it would just be better to run each unit or several units off of its own astron.
> The rig on one and the amp or amp and accessories off of another.
>
> The question came up because when I tried to run a 10 meter rig and a solid state 150 watt ten meter amp off of one astron, I got an indication that perhaps there
> were too many amps being drawn. The voltage took a dive downward and the power output of the amp was not what I would have expected when the amp and rig
> were both connected to the same astron.
>
>
>
> > From: rayfrijr at msn.com
> > To: forsale-swap at mailman.qth.net; boatanchors at mailman.qth.net
> > Date: Tue, 3 May 2011 11:24:07 -0600
> > Subject: Re: [ForSale-Swap] Power supply question
> >
> >
> > I have a question about Astron power supplies.
> > I have two of them, each 20 amp capability. Is it possible (permissible) to connect them in parallel so that I can
> > power a radio and an amp or several other units that added together would draw near or more than the 20 amps
> > one would supply?
> >
> > Elementary theory we learned as a novice says that when you connect batteries in series, the total voltage is the sum
> > of the individual voltages and when batteries are connected in parallel, the total current is the sum of the individual
> > current sources. So I'm wondering if the same would apply to connecting two Astron supplies in parallel would give me
> > the sum of the individual current capabilites of the two or if something would go skee whumpus because of bootstrap
> > circuits or other designs inside one or each of the Astrons. Perhaps they would buck each other.
> >
> > Looking at the schematic, I can't readily tell if there would be a problem....