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-   -   Simple heater question (http://www.diyaudio.com/forums/tubes-valves/144845-simple-heater-question.html)

athos56 27th May 2009 03:59 PM

Simple heater question
 
Is it kosher to lift heaters by hooking the filiment windings CT to a 50v bias tap from another transformer (vs. making a divider from the B+)

Thanks.

zigzagflux 27th May 2009 04:01 PM

No problem at all. The assumption is you will rectify and produce a stable DC reference. You wouldn't want to just tie it to 50V AC. Also assumes the CT of the winding is essentially circuit common.

athos56 27th May 2009 04:58 PM

Thanks. A simple diode, half wave rectifier would be sufficient? So rectified bias tap to Heater winding CT's to PSU ground bus. Correct?

zigzagflux 27th May 2009 05:24 PM

Exactly

athos56 27th May 2009 05:31 PM

Thanks.


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