I agree with Butch.

While the Linear supplies cost more,
 weigh more and
 use more power, they are many, many times simpler and have hundreds of 
fewer components than their switching cousins.

There are hundreds of more components to possibly fail in the switchers.

This is just my opinion and preference.

Howard #3

----- Original Message ----- 
From: "Butch Bussen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 02, 2014 2:57 PM
Subject: Re: Power Supplies (Switching or Not)


> You'll get a lot of comments on this.  Many like switchers.  I
> personOally prefer the old analog transformer supplies.  Many swichers
> are clean, some are not and put out spurious birdies in the ham bands.
> Some have a fan that runs continiously such as in my mfj switcher.  I
> tend to leave my rigs and supplies run 24 seven, so I see no need for a
> fan running, they shoould have put some kind of temperature control.
> I've got a couple Astron 70 amp standard supplies which i run a 2 meter
> and an hf amp on.  Very heavy, but my preference.  Also, I know how to
> repair standard regulated supplies, switchers are magic!!
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
>
>
> n Wed, 2 Apr
> 2014, Dave Basden wrote:
>
>> I may be in the market for a new power supply for my Kenwood
>> TS-590.  I hate to pay the price of a Kenwood PS-590, so am looking
>> elsewhere.  It should probably be about 25 amps 13VDC.  Switching
>> power supplies seem to be about half the price of the old
>> standard.  They're also a lot lighter in weight.  There must be some
>> advantage to the old standard supplies or they wouldn't still be
>> available.  What is the difference and why should I consider the more
>> expensive standard supply?
>>
>> 73,
>>
>> Dave, W7OQ
>>
>> 



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