[time-nuts] Wenzel, Inc article on low-noise oscillators

[Mike Fahmie]

The Wenzel article mentions that care was taken to minimize power supply 
noise and HEATER NOISE. I had never considered the effect of the magnetic 
field from the heater winding coupling into the oscillator circuitry.

Fortunately (aka luckily), I had always wound my heater coils with 2 
conductor thermocouple wire (the constantin conductor is quite resistive) 
and brought the return current back through the copper conductor just for 
convenience, oblivious to the field cancellation feature! Another example 
of being right for the wrong reason!

-Mike-
WA6ZTY


At 07:12 AM 1/23/2008, you wrote:
>Hello All--
>
>I suppose that most on this list already know all about
>this, but as a newbie to considerations about low noise
>oscillators, I found the Wenzel, Inc article on design
>notes for ultra-low noise oscillators interesting--
>
>Just in case anyone on the list has not seen it:
>
>http://www.wenzel.com/pdffiles1/pdfs/RFDesign1.pdf
>
>Mike Baker
>-------------------------------
>
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