[Milsurplus] Opinion on transformer ?

[Peter Gottlieb]

Fun!


On 2/6/2019 9:39 PM, B. Smith wrote:
>            This power supply designer software comes in handy. Great to answer 
> "What If" questions.
> http://www.duncanamps.com/psud2/
> Z
>
>
> On 2/6/2019 7:36 PM, Peter Gottlieb wrote:
>> Remember that is peak value, which would be unloaded DC voltage. That will drop quickly under load due to transformer impedance, and hum will increase as well.
>>
>>
>> Peter
>>
>>> On Feb 6, 2019, at 6:14 PM, Kenneth G. Gordon<kgordon2006 at frontier.com>  wrote:
>>>
>>>> On 6 Feb 2019 at 17:34, Seth Taylor wrote:
>>>>
>>>> Take rms voltage. Double. From Shay's curves, multiply by 1.3. 180 x2
>>>> = 360 x 1.3 = 468.
>>> I rountinely use 2 X SQRT 2, or about 2.828 X 180 = ~509. Seems to work out pretty
>>> accurately for me over the past 50 years.
>>>
>>>> Use at least 60 mfd effective capacitance on output.
>>> **I** certainly would...
>>>
>>> Ken W7EKB
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>
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