[Milsurplus] Quieting A DC/DC Converter

[Al Klase]

Gang,

Are there "isolated" versions of these converters?  That would be 
helpful in radios like the BC-348 where the negative output of the dyno 
in above chassis ground.

I don't think isolation is possible with a buck or boost circuit 
topology, as your adding a voltage in series with the input..

Al

On 1/20/2018 12:28 AM, Peter Gottlieb wrote:
> The one I saw said it was non-isolated so not that one. You will need 
> isolated ones to do that.
>
>
> Peter
>
> On Jan 20, 2018, at 12:10 AM, Tom <noflood1 at sonic.net 
> <mailto:noflood1 at sonic.net>> wrote:
>
>>   I'm wondering if for a BC-654 could you take two of these, set the 
>> outputs to 250 violts and then wire in series for 500 volts??
>>
>>
>>                                       Tom W6TOM
>>
>>
>> On 2018-01-19 13:45, Military Wireless Museum via Milsurplus wrote:
>>
>>> On 14 Jan 2018 at 16:35, David Stinson wrote:
>>>
>>> > Here's a listing for these DC-DC thingies. It's
>>> > 390 VDC max.
>>> >
>>> > https://www.ebay.com/itm/142555893852
>>>
>>> Hmmmm....looks very interesting. I see several other such models by 
>>> different folks on
>>> eBay.
>>>
>>> Has anyone tried these yet?
>>>
>>> Ken W7EKB
>>>
>>> ---
>>>
>>> I've bought some of these and two other types, a 180v and 480v max 
>>> output types. I have the one above powering my ARB set to 240v dc 
>>> and it runs cold but it will need putting in a screened box etc 
>>> before fitting in place of the dyno.
>>> The 480v unit gives 96ma into 5k so should drive a tx even.
>>> Ben.
>>>
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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