Think that circuit is better then a hifi transformer (say 2500 ohms center tapped) to 8 ohms? 8 ohm side goes to the hifi amp, the 2500 ohm side goes to the grids. Swamping resistors go across the 2500 ohm side (1250 ohms to center tap)
Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Geoff/W5OMR > Sent: Thursday, July 26, 2007 10:25 AM > To: Discussion of AM Radio in the Amateur Service > Subject: Re: [AMRadio] Subj change - HB designs > > W5OMR wrote: > >> The more I think about it, the more I like that idea. a > single 4-125, > >> modulated by (4) 811's in push-pull parallel with the > option of going up > >> to a 4-250 or even a 4-400. > > > Brett gazdzinski wrote: > >> With 4 tubes to drive, it takes a lot of clean low > impedance power to drive class b triodes. > > http://www.qsl.net/wa5bxo/driver1.html > > -- > 73 > > ______________________________________________________________ > AMRadio mailing list > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > To unsubscribe, send an email to [EMAIL PROTECTED] with > the word unsubscribe in the message body. > ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
