[Collins] Another 516-F2 PS Question

[N4ch at aol.com]

Hello Al,
 
I have a new Sprague cap I think U can use.........it's 0.055  uF, rated at 
3000 VDC.   I doubt the extra 10% capacity will make any  difference, but 
the extra voltage rating will probably help keep it from going  bad like the 
original one did.   It's an axial-leaded tubular cap,  about an inch in 
diameter, and about 2 1/2 inches long.   I'll bring  it to the Benson (NC) 
hamfest this coming Sunday.......think U usually go to  that one.
 
73, Herman, N4CH
 
 
 
In a message dated 11/10/2015 4:49:52 P.M. Eastern Standard Time,  
anchor at ec.rr.com writes:

ooops,  typo -- meant, "could series 2 0.1 at 500v" caps to get 0.05

Al

On  11/10/2015 4:33 PM, Al Parker wrote:
> Hi Folks,
>     I just found out why my 516F-2 was putting out about 1400vdc.   C1,
> the 0.05 at 1kv cap across the filter choke was shorted.  Thus,  I had a
> capacitor input "filter" with no inductance or series  resistance.
>      IIRC that cap is to resonate the choke  when using 60c AC input.
> The note on the skem says to remove it if the  line freq. is above 60cy.
>      Question, how much  affect does it have on the output voltage or
> filtering?  I don't  have a 0.05 at 1kv cap in stock, but could series 2
> .01 at 500's.  But  what difference would there be if I left it out?
> any thoughts would be  appreciated
> 73,
>
> Al, W8UT
>  www.boatanchors.org
> www.hammarlund.info
>
> "There is  nothing -- absolutely nothing -- half so much
> worth doing as simply  messing about in boats"
> Ratty, to Mole
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