That is a possibility Dennis however there is little if any difference in the open loop gain of the two circuits or their output level before clipping about (40 watts). I was thinking that perhaps the primary wires were color coded incorrectly, as I am nearly positive they are, and the secondary may be as well. As a result I may have the speakers tied to the 16ohm output and taking the feedback from there would be greatly different than the 8ohm connection. The XFMR load would be entirely different and untold other differences. I will check ringing and resonance as well though.
Thanks for the input Dennis John Coleman, WA5BXO -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dennis Gilliam Sent: Thursday, May 14, 2009 5:48 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] push pull output XFMRs and neg feedback It sounds like you may have a shorted turn in one of them, NOS notwithstanding. It has happened to me, and it forms a tuned circuit resulting in a phase shift as it is an LC network now. 73 de W7TFO ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
