specification for the catode bypass cap in Tubelab SE

[michaeljessen]

Is it ok to use 4700mf - 16V for the C-8 & C-10 in the tubelab SE ? The specifikation in the part list is 4700mf - 6,3V. Can I use a 4700mf - 16V insted of 6,3V ? I ask because I can get a Audio Note Kaisei electrolytic 4700mf. 16V

Another question is about the C5. Can I use a 220mf 350V for a 45 application?
I have a pair of Nation Union NOS 45 from year 1951 and want to go about 250-275V in the B+ Is it ok with a 350V or is a 500v better? I think i run a Hammond M158 choke and 5mf 350V at C-4. My power transformer is a Hammond 370 EX 550vct 144mA

Michael

 

[Tubelab_com]

The 350 volt caps should be OK with that transformer.

Can I use a 220mf 350V for a 45 application?

Yes.

5mf 350V at C-4.

5uF may not give you enough B+. Build it and see. If you want a little more voltage use a larger microfarad value for C4. Don't go higher than 47 uF.

 

[JonSnell Electronic]

Sorry but mF is milli farad not micro farad. Somewhat larger in value.
Just sayin'
The SI derived unit for capacitance is the farad. 1 farad is equal to 1000 millifarad, or 1000000 microfarad.

 

[michaeljessen]

sorry. Microfafad is shortening uF. not mF. Thanks for the info.

 

[Cal Weldon]

Or even µfd. Which on a Mac is 'option m'