Voltage controlled oscillator question

Daku · 2010-05-10T06:30:32+00:00

Could someone please clarify the following ?Consider a LC-tank and a ring oscillator based voltage controlledoscillator. In a LC-tank, the control voltage influences theoscillation frequency - hence "voltage controlled oscillator". In aring oscillator based voltage controlled oscillator, the oscillationfrequency is independent of a control voltage. The control voltagebasically switches the inverters on and off. So how does one controlthe oscillation frequency ??

May 10, 2010 23 Replies

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George Herold 16 years ago

function

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Hi John, You posted that link before, but I can't seem to make it work. Is this on TI's web site?

It sounds like this would make an 'OK' VCO. And one could add some outer control loop that would switch in (or out) two more inverters if the control voltage got near the end of it's range. (As someone already suggested.)

George H.

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John Fields 16 years ago

No, it's on USENET at alt.binaries.schematics.electronic, which Google groups can't access, and Verizon shut down access to the alt hierarchy in July of last year, I think. AFAIK they may not even offer any access to USENET any more. If you want to get USENET directly and not through a web interface like Google groups, then you need to get a USENET ISP and access USENET with a newsreader.

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Michael A. Terrell 16 years ago

archives some messages to ABSE, but I don't see that one.

Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

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George Herold 16 years ago

"BTW, I'll email you a copy of the PDF..."

Wow thanks John! snipped-for-privacy@teachspin.com I'm not planning on building anything, but it would be nice to see how someone else did it.

George H.

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