5mA DC transformer - tube output stage?

fyzygy · 12th November 2011, 02:57 AM

I have a transformer labelled as follows:

PRI 15,000 OHMS AT 5ma D.C.

plus a bunch of secondary taps, 62.5, 150, 250 and 600 ohms.

Can this be used for transformer-coupling a line output stage in a tube circuit? It's that 5mA specification that concerns me ... a little too low for tubes? And I'm guessing a cathode follower would still be necessary for impedance matching to the 15K primary?

Tony · 12th November 2011, 08:56 AM

then don't use it with dc, use it as a parafeed....the 5mA is not really low for tubes unless you are coupling to a speaker....then again......depends on the circuit you want to use....

12th November 2011, 02:57 AM	#1
fyzygy diyAudio Member Join Date: Jul 2010	5mA DC transformer - tube output stage? I have a transformer labelled as follows: PRI 15,000 OHMS AT 5ma D.C. plus a bunch of secondary taps, 62.5, 150, 250 and 600 ohms. Can this be used for transformer-coupling a line output stage in a tube circuit? It's that 5mA specification that concerns me ... a little too low for tubes? And I'm guessing a cathode follower would still be necessary for impedance matching to the 15K primary?

12th November 2011, 08:56 AM	#2
Tony diyAudio Member Join Date: May 2003 Location: Palatiw, Pasig City	then don't use it with dc, use it as a parafeed....the 5mA is not really low for tubes unless you are coupling to a speaker....then again......depends on the circuit you want to use.... __________________ http://www.electronicslab.ph/forum/i...?topic=32688.0

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