[Milsurplus] Opinion on transformer ?

[Peter Gottlieb]

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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