SMPS for B+ ? it works! Rainy Day Project #1

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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby Shannon Parks » Sat Feb 28, 2015 11:39 am

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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby EWBrown » Sun Mar 01, 2015 8:11 pm

The 12VDC, 5A brick is for filaments, that should be able to light up ten 13EM7s with current to spare! @= (666) [:)
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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby soundbrigade » Sat Mar 14, 2015 3:21 pm

How about building your own SMPS?? Using a high switching frequncy will give you a smaller PSU.

What else can I say, but telling you guys that you are crazy ... :o)

On the other hand, we were out looking at the "Irish" people here in Chicago celebrate St Patriks Day, and crazyness seems to be the new black ... *)

There are commersial smaller HV SMPS that can be used for preamps and such, however.
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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby EWBrown » Wed Jun 01, 2016 8:07 pm

12VDC is for filaments. 12V6s, 12SL7s and 12SN7s are cheaper than their 6V brethren, as are the "14V" loctals.

/ed
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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby EWBrown » Mon Aug 08, 2016 11:44 am

12VDC for filaments, plenty of current, I'll use 12V filament octal or loctal tubes.
Also could string 6.3VDC filaments, two in series. [:)
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Re: SMPS for B+ ? it works! Rainy Day Project #1

Postby Geek » Mon Aug 08, 2016 2:18 pm

EWBrown wrote:Also could string 6.3VDC filaments, two in series. [:)


Been doing that successfully for years now with my commercial phono pre builds to keep I²R losses down in the umbilical cable to the PSU :))
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