ZV7-T (transformer)

[Zen Mod]

more turns - more stray capacitance yukyuk

keep it at bay - saying that you need entire core covered with wire , so one layer is minimum

sort of gamble - will you go to use 1KW5 , 2KW or 3

whatever you choose - I see no reason to cry later ;

btw. capacitance can be somewhat lowered with connecting small chokes in series with each winding

[stajo]

So ordering 3 KVAs with only the primarys wound for 2*115 V would be a fair gamble? The audiogrades will be with epoxy filled centers so I can not unwind it.

[Zen Mod]

yup - just primaries ;

if you can , say that your goal is rather fully covered core than exact number of turns (needed for any voltage )

they don't care - that's just few clicks on machine control panel

[stajo]

Well as far as I know the primarys for 2*115 V usually goes in some layers on toroids so it should cover the core all righty.

[stajo]

anybody has recommendations what to use for the 47 uF input caps?

[Zen Mod]

nothing wrong with Elna Silmics , bypassed with small MKC

[stajo]

So you dont think I should go straight on those stuff?

B32526T1476K EPCOS | Mouser

B32678G3476K EPCOS | Mouser

FFB44E0476K AVX | Mouser

/Staffan

[Zen Mod]

you're wasting your moony , not mine

[stajo]

No, I'm mooning your waist

Ok, It was the word waste anyway that I needed.

Thanks
Staffan

[stajo]

Hi

I'm on some early projecting here and had a lookie in my closets. I had some 400 VA 2*12 VAC that I could use one per monoblock with dual graetz. Then I could do with dual 25 V caps per rail and RC. Or I also had some 400 VA 2*24 VAC that i could use. Then I need single 50 V caps. What would you prefere here? And what values on the filtercaps per RC?

Best regards
Staffan