D-Day Circuit: Understanding Leif's Analog Dialogue

[thankz]

http://www.analog.com/library/analogdialogue/leif/image004.gif
http://www.analog.com/library/analogdialogue/leif/d_day.html
http://www.analog.com/library/analogdialogue/leif/d_day_continued.html

 

[stedwards]

Apparently its a clean start-up oscillator utilizing two crosscoupled voltage controlled current source-capacitor pairs as well as a source or great amusement at an Analog Devices presentation. But I suspect you are asking something else.

 

[thankz]

no that was what I was asking, I think this will be a future project, it seems simple enough it's just hard to wrap my head around this schematic.

btw what do the infinity signs mean?

I was thinking maybe I could make an Oscar type circuit with an inductor picking up the Earth's magnetic field as the starting voltage/noise?

 

[stedwards]

I think the infinity sign indicates that the enabling voltage is capactively obtained (no resistive elements).

I guess this could be noise driven. But it defeats the reason to use this oscillator in the first place.