[Boatanchors] [ForSale-Swap] Power supply question

[Barrie Smith]

That's true, Jim.  I have a pair of Astron 70 amp supplies that I've 
configured in that manner.

73, Barrie, W7ALW

----- Original Message ----- 
From: "Jim Wilhite" <w5jo at brightok.net>
To: <boatanchors at mailman.qth.net>
Sent: Tuesday, May 03, 2011 11:54 AM
Subject: Re: [Boatanchors] [ForSale-Swap] Power supply question


> 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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>
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