[Milsurplus] 24 volt brute force filtered supply verdict ?

[Bill Cromwell]

Hi Hue,

I do not know what mil surplus might want a 24 volt supply like that 
except for some of the 24 heater strings. It seems a dynamotor B+ supply 
needs a little more ooomph than this.

You might look locally, outside of the mil surplus group to the higher 
power solid state radio hams. The higher power FETs (and not so high) 
seem to do better on higher B+ starting at 24 to 48 volts. That seems to 
be a fairly heavy power supply for shipping - you didn't tell us the 
weight. I bought the iron for my power supplies and I did have them 
shipped in here. Of course, I don't need another one even if I lived in 
your neighborhood. But you might increase your chances looking at the 
general ham population. Maybe on craigslist or one of the ham trade 
facebook groups. I recently found such places and sometimes there are 
items of interest. I sold my Apache through craigslist.

I hate to see usable things go to the scrapper or landfill too. Best of 
luck with the power supply.

73,

Bill  KU8H

On 09/29/2018 05:28 PM, Hubert Miller wrote:
> I found in storage a power supply for a 32 volt boat radio. It's brute
> force filtered, CT secondary, 2 diodes that look 5 – 10 amp each,
>
> DC fused at 6 amps, filter capacitor, filter choke, 50 ohm bleeder
> resistor.  Transformer core is 4.5 x 2.5 x 5.25 inches and it looks like it
>
> would do more than 6 amps out, looks like 10 at least. There are taps on
> the primary and I can maybe get close to 24 volts out if I rewire
>
> input. The filter choke looks like it might be a limiting factor on the
> rated current, just guessing by wire gauge of its windings.
>
> Now, I don't really need a dynamotor spinner supply, as I don't plan on
> running anything on dynamotor. I recall many years ago I had a
>
> brute force filtered 24 volt supply I bought from Fair Radio; and altho
> I never really respected supplies whose unloaded voltage soared
>
> toward the AC peak, it did work very satisfactorily with an ARR-15 I
> had. I also used it to demonstrate a German WW1 spark transmitter.
>
> ( Which occurs to me, I need to sell this year, finally. )
>
> I tend to have qualms about tossing out anything that can still be
> useful. So I wonder, should I just add this thing to the scrap metal
>
> collector's truck, or will it possibly, likely have usefulness to
> someone else ? It's potentially a 24 volt DC, brute force filtered supply,
>
> in a rugged cabinet with paint still intact, cooling louvres, and
> opening for cables in – out. What is your advice? I also don't want to be
>
> storing any longer, things that have no usefulness to me.  I also will
> not ship anything that has satisfies the AND function of heavy +
>
> low monetary value.
>
> -Hue
>
>
>
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-- 
bark less - wag more