[Boatanchors] [ForSale-Swap] Power supply question

[Jim Wilhite]

Seems that there are Astron power supplies out there than have a 
connection on it allowing you to parallel two of them.  I don't remember 
the details but it makes one of them regulate both.

Jim/W5JO


----- Original Message ----- 

>
> 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) *
> * * * * * * * * * * *
>
>
>
> ----------------------------------------
>> 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....
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