Hi If you want to start with sine waves rather than square waves, there is a lot of data on duty cycle and harmonics. Often you find it with stuff in the title like "clipped cosine wave".
Just about any RF design text book from the 1940's or 1950's probably will have some nice charts in it. Fiddling bias on class C triode amplifiers used to be a major part of the design. No, I will not under any circumstances reveal which course I learned that in and how long ago it was.... Of course a simple Excel spread sheet can come up with all of this pretty fast. Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Didier Juges Sent: Thursday, February 11, 2010 10:42 AM To: Time-Nuts Subject: Re: [time-nuts] Injection locking This link will show you the effect of duty cycle on harmonic content: http://www.ko4bb.com/Test_Equipment/Pulse_Modulation/ Didier KO4BB ------------------------ Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Rex <r...@sonic.net> Date: Thu, 11 Feb 2010 02:09:48 To: Discussion of precise time and frequency measurement<time-nuts@febo.com> Subject: Re: [time-nuts] Injection locking Kit Scally wrote: > ... > > On a related topic, I found some while ago - and promptly lost - a > graph/chart showing harmonic level variations with varying duty-cycle of > an input waveform. This was to some degree a graphical representation > of the Wenzel document referenced by Bruce recently. Has anyone got a > link to this document please ? > > > Kit > VK2LL > > Is this the Wenzel document you are referring to? http://www.wenzel.com/pdffiles1/pdfs/choose.pdf ("Choosing a Frequency Multiplier's Waveform") Figure 2 in that doc is a graph of Harmonic Amplitudes vs. pulse width. Is that what you were looking for? There are a couple of bar charts too, for specific duty cycles. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.