Pete's discussion of double balanced mixers and the associated toroids has made me feel uneasy about my efforts in this area. I wonder if my diodes were completely matched. And I KNOW that my toroids are not as well done as Pete's.
I recently put an SBL-1 into my old, long-evolving 20 meter ceramic resonator DSB rig. Careful with those nice little boxes! A bit too much juice and you can fry the little internal toroids (as I have done!).
A while back I found in an RSGB Handbook a nice diagram showing how the diode ring mixer does its thing:
Our book: "SolderSmoke -- Global Adventures in Wireless Electronics" http://soldersmoke.com/book.htm Our coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmoke Our Book Store: http://astore.amazon.com/contracross-20
Am I missing something? Where's the link to Pete's video?
ReplyDeleteTnx, Dave
https://www.youtube.com/watch?v=kzcvNzpMv3U
ReplyDeletePete , good stuff,
ReplyDeletekeep it coming , looks like i will be building another one ! Thanks, 73, jerry K9UT
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