Simple heater question

athos56 · 27th May 2009, 03:59 PM

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.

27th May 2009, 03:59 PM	#1
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	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.

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27th May 2009, 04:01 PM	#2
zigzagflux diyAudio Member Join Date: Oct 2006	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.

27th May 2009, 04:58 PM	#3
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Thanks. A simple diode, half wave rectifier would be sufficient? So rectified bias tap to Heater winding CT's to PSU ground bus. Correct?

27th May 2009, 05:24 PM	#4
zigzagflux diyAudio Member Join Date: Oct 2006	Exactly

27th May 2009, 05:31 PM	#5
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Thanks.

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