[NJARC] Grundig Radio Cap Values

[Jim Whartenby]

Scott
nF is 10^-9 Farad just like uF is 10^-6F and pF is 10^-12F.  This
notation is slowly creeping into newer equipment schematics, if you can
find them!  Another interesting descriptor is for resistors below 10
Ohms.  For example 4R7 is 4.7 Ohms.  I translated your cap values in
the original text.  As for Styroflex, I agree with Al, no need to
replace.  If you clean these caps, use alcohol only!  Acetone will
dissolve styrene.  I learned this lesson the hard way!
Regards,
Jim

--- Scott Roberts <ng19delta at yahoo.com> wrote:

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> _______________________________________________
> Greetings!
> 
> I am considering recapping my early 1960's Grundig
> Majestic console- it is showing the usual signs of
> capacitor failure, and so I am hoping to bring her
> back to her former excellent sound quality. However I
> am somewhat confused at the values. I am used to mf &
> uf, and pf. This radio has values shown in her
> schematic of nf, uf and pf. What is "nf"? It seems the
> electrolytics are marked in "uf" but a lot of the
> paper caps are marked in "nf"
> 
> Examples form Grundig schematic for the model SO 2
> U/1:
> 
> C-11  22nf  = .022uF or 22,000pF
> 
> C-29  47nf  =  .047uF or 47000pF
> 
> C-62  2,2 nf  =  .0022uF or 2200pF
> 
> C-84  50uf 12/15v (Electrolytic) 12 to 15 volts working
> 
> I have also identified from the schematic the paper
> caps(papier), the ceramic caps(keramik) but what is a
> "Styroflex" capacitor, and should they be replaced as
> well? I am planning to replace the paper ones and the
> electrolytics, but not the ceramics.
> 
> Thanks for any help here,
> Scott
> 
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