[time-nuts] Injection locking

[Brooke Clarke]

Hi:

A continuation of the idea of using something other than a square wave 
is what Don Lancaster promoted that were called "Magic Sine Waves".  The 
idea is to come up with a waveform that maximizes the desired output 
sine frequency while greatly suppressing the low order harmonics.  The 
result is that a very simple low pass filter will yield a low distortion 
sine wave. This was aimed at DC to AC inverters, but with high speed 
logic could be used to generate an RF sine wave.

Have Fun,

Brooke Clarke
http://www.PRC68.com


Rex wrote:
> 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.
>
>
>
>
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