EMRFD Message Archive 1741

Message	Date	From	Subject
1741	2008-06-24 03:36:24	Jason Milldrum	Dual Gate MOSFET Biasing
Hello, I humbly come to the group asking for a little feedback on a investigative project that I've started working on. I have a nice supply of BF998 dual gate MOSFETs from KE6F, but I know very little about how to use them properly. I've had a hard time finding comprehensive information about the theory behind the biasing and applications of the DGFET. So I decided to start from the ground up in learning how to use these devices. I've detailed my first round of experimentation on a blog post, which you can find here: <http://www.nt7s.com/blog/2008/06/dual-gate-mosfet-investigations-biasing/> I would appreciate any feedback, guidance, or insight that anyone could provide. Dual gate MOSFETs seem to be fairly neglected these days, but they intrigue me quite a bit. I'd love to learn more about them and share what I learn with others who are interested. Thanks, Jason Milldrum, NT7S ===== Amateur Radio Station NT7S - <http://www.nt7s.com> NT7S Blog - <http://www.nt7s.com/blog> qrp-l.org Flickr Group - <http://flickr.com/groups/qrp-l/>
1742	2008-06-24 03:57:32	Sam M	Re: Dual Gate MOSFET Biasing
Jason Milldrum wrote: > I would appreciate any feedback, guidance, or insight that anyone > could provide. Dual gate MOSFETs seem to be fairly neglected these > days, but they intrigue me quite a bit. I'd love to learn more about > them and share what I learn with others who are interested. > perhaps reading the literature about the Electro Luminescence Receiver may have a clue that would help your understanding? http://www.pan-tex.net/usr/r/receivers/ lots of pages there and sometime a bit confusing to navigate, but there are tons of info there. The ELR is a nice platform to experiment and play on, if you aren't into the Manhattan Madness Method, heheheh. Wide traces on the boards allow for many heat and reheat cycles allowing you to try lots of different ideas without ruining the board(s). David White is very helpful if you have any questions. We used the audio section to start learning about spice files. Some links about that at the bottom of this page: http://pages.suddenlink.net/ka5oai-1/ -- GB & 73 KA5OAI Sam Morgan http://linuxbasics.org Linux, the lifetime learning experience.
1743	2008-06-24 04:20:47	Sam M	Re: Dual Gate MOSFET Biasing
sorry should have read all of your web page b4 I mentioned the ELR, I see now you have already found it. <-embarrassed-> -- GB & 73 KA5OAI Sam Morgan http://linuxbasics.org Linux, the lifetime learning experience.