DC heating for 6SL7

sweet & juicy SE amp for 1626 Darlings and the 6L6 family

DC heating for 6SL7

Postby umenn » Mon Nov 09, 2015 9:52 am

Since the EDCOR XPWR005 has two 6.3V windings are there any pros to connect each of them to a separate 6L6GC tube?
And what is the correct connection if we want to get 12.6V for a DC heating for the 6SL7?

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Last edited by umenn on Tue Nov 10, 2015 1:52 am, edited 1 time in total.
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Re: DC heating for 6SL7

Postby battradio » Tue Nov 10, 2015 12:20 am

Use two bridge rectifiers one for each 6 volt winding and sum the output of the bridges in series and you will get enough voltage to regulate it to 12 volts , use a separate 2200 uf 25 wvdc cap on each bridge .
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Re: DC heating for 6SL7

Postby umenn » Tue Nov 10, 2015 1:46 am

Thank you.
You mean something like this? Looks good for me. Should I ground the DC circuit somewhere?

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Re: DC heating for 6SL7

Postby battradio » Tue Nov 10, 2015 9:35 am

That should work fine , you can't ground the 6SL7 because of the 0ther two grounds . Use a .1 uf cap off the negative end of the filament of the 6SL7 .
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