SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

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RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS

Posted by Caucasian Blackplate on April 1, 2015 at 19:43:16:

Since you were too lazy to read my post, which indicated that the center dot was the quiescent operating point, I've added a blue box to help you.
You suggested to Fenderlover an operating point of 37ma/250V. I drew the load line assuming a 2.5K output transformer.
B+ is irrelevant with respect to the operating point. The same operating point could have a B+ of 600V or 275V.
It is easy enough to look at the load line and tell when the tube stops conducting. There's no negative axis for current for a reason...