This reminds me of the daf amplifier debate. Mike AB5XP Alan Watts: There are basically two kinds of philosophy. One's called prickles, the other's called goo. And prickly people are precise, rigorou
? As I understand it, Norm started off with the G2DAF article and circuit. When the distortion proved to be problematic, Norm began experimenting with the screen circuitry in hopes of reducing disto
Hello Peter, From: Peter Sundberg <sm2cew@telia.com> This wise guy contested the signal I heard on 40 meters an adequate distance away, where I shouldn't have heard him. The typical round table with
-Snip As Colin, K7FM correctly states; There is one *important* difference. The time constant in Norm´s screen circuit was way to slow !! It most certainly would! Now, if your only reference is
I love it Skipp (Bush ??)! I note with interest what you say, the only thing I can say is that if Norm's amp is to be considered the standard of all DAF amps you are wrong. I can immidately point out
? Norm tried various time constant screen supply configurations. The one that produced acceptable distortion was a 350v shunt regulator. The 3/2 power rule is undoubtedly true. ? There were two DAF
I have never heard a G-G amplifier that had -22db total distortion. Hal's 2, 813 - DAF amp produced similar results. - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contes
Welp, here is my whole take on this DAF thing: It appears that this circuit would use far less materials to construct (i.e. lack of a screen supply). If it was even close to a great design, companies
? The screen supply for the 2, 4CX250B amp in question required a string of a dozen 30v, 5w zeners tied to the cold end of the extant HV bleeder resistor. Total cost, under $10. cheers, Mike. - Rich
Nicely done, Mike. On behalf of everyone, (who cares), Thank you!. Happy Y2K, Mike(y) W3SLK people To: <amps@contesting.com> ;-o)) -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: a
One more time... there has only ever been *ONE* G2DAF circuit. Only one was ever published, and a scanned copy is on my web site. All the others - including Norm's circuits - are NOT G2DAF amps. They