Hello LF people, If I have a ferrite toroidal output transformer for a push pull Class D 136kHz amp, that gets warmish after a WSPR15 session, what would happen if I wound the same number of primary
Another way - a bit more complicated - to reduce heating significantly is to feed DC not via the center tap of the output XFM but via separate DC chokes. This would eliminate the DC bias of the core(
Here is a picture of a professional made Class D 500W MW PA by ID Elektronik. http://www.id-elektronik.de/produkte/mittel/mittel.htm It uses also DC feeding by a separate choke, not via the output t
Chris Your original post describes the core as "warmish" after a WSPR session ... maybe some clarification of what temperature "warmish" is would be helpful. A core that runs 'warm' should not be cau
Hi Jay, Can you recommend a way to compensate for the doubled inductance? Also, I'd be interested in two driver boards if you get more made. Thanks, John VA3VVV Subject: Re: LF: Stacking toroids To:
Hello LF'ers, Saturday, March 25, 2017 Thanks for all the replies on my heating toroid question, as best as i can tell it's not the core per se that's heating, more the 4 turn primary winding, made o
