Dear Hans Albrecht, Mal, LF Group, A better alternative to mains transformers, etc., is to use one of the larger sizes of ferrite SMPS core sets. That way, you can design a transformer to produce the
Dear Stefan, LF Group, No, I am not currently transmitting on 9kHz - the amplifier was built some years ago to do some component tests in the VLF/LF/MF range and covers from several kHz to about 2MHz
Hello Jim, LF, Am 20.02.2011 21:53, schrieb James Moritz: [...] I made a matching transformer a while ago that works quite happily at the 100W level at 9kHz using an ETD49 core set. [...] Cheers, Jim
Dear Mal, do not expect anything from laminated sheet iron cores. Usable frequencxys depends on the thicknes of the Iron sheets, and the conductivity ot the material. Therefore the iron is alloyed wi
Jim es Co I have remarked in the recent past about some acty on 9 Khz not announced on the reflector. Carrier on for some time and then off and on one occassion some V's. Some secret experimenter!! R
Hans Thanks for the info. I have several toroid wound mains transformers and wondered if they would be any use. A couple of persons have mentioned using this type on VLF. I have a number of old LOPT
LF Has anyone measured the efficiency of a mains toroid xformer on 9 Khz. I have some of these which could be useful. ie 230v Prim and 6/12/24 v Sec, rated 10A at 12v de mal/g3kev
