With bias, 12V transistors are class B or AB, not C. See http://flarc.net/eme-info/PDF/N1JEZ-2.pdf.
He describes an amp changed to Class B (very low bias for little heating). Regular IMD3 -22db. After predistortion -55db. Plus extra db in additional power power. All for a cost of feedback + some programming. With predistortion we can get more power (drive closer to saturation) with less heating (higher efficiency and lower quiescent current) and less IMD. All for a cost of hardware feedback + programming. I am all for 50V (or higher) for high power amps. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-SS30DV-feedback-OT-tp7608653p7608673.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
