tag:blogger.com,1999:blog-7590176649168185428.post7016370478313722660..comments2024-03-28T18:51:21.655-04:00Comments on SolderSmoke Daily News: Notes and Video on Doug N0WVA's Amazing Single Transistor Regenerative ReceiverBill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7590176649168185428.post-43235082097512231402021-07-24T15:22:51.642-04:002021-07-24T15:22:51.642-04:00Electronics Illustrated in the 1960s had a 2-trans...Electronics Illustrated in the 1960s had a 2-transistor transmitter using 2 high voltage transistors in parallel for 17 watts input at 175 volts. You could use one such transistor and lower the voltage slightly for safety and still have useful output power. The output circuit was the usual tube type for high impedance, not the usual transistor LP filter. If harmonics were too high, you could still use high impedance output circuit, just use 2 tuned circuits.<br />I have the "QST Novice Pair" built from their Novice License book and i am thinking i will modify it for transistors using these circuits.Hue Millerhttps://www.blogger.com/profile/14984577842094336181noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-72034551074731710112019-11-26T17:10:31.400-05:002019-11-26T17:10:31.400-05:00maybe a nice low noise op amp could replace the 2n...maybe a nice low noise op amp could replace the 2n2222a and drive headphones w/o needing an output transformer. Of course that would have lots of transistors and be considered blasphemy...lolcheesedoodlefdrhttps://www.blogger.com/profile/15786090273215140189noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-71007017303173534872019-11-26T17:05:55.557-05:002019-11-26T17:05:55.557-05:00Interesting, but I think given that you posted add...Interesting, but I think given that you posted additional mods from Doug, you should also include a link to or posting of the schematic he is referring to<br /><br />https://forums.qrz.com/index.php?attachments/scan006-jpg.121895/<br /> <br /><br />This schematic shows how he grounded the source, added the bias to the grid leak and used the wire in place of the small cap feeding the gate.<br /><br />cheesedoodlefdrhttps://www.blogger.com/profile/15786090273215140189noreply@blogger.com