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richy_64

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Beiträge: 198
New PostCreated: 2004-08-20, 09:54 PM CET     Subject: Re: what is that MAR-8 driver Reply with Quotation  
This shows exactly what I want to explain:

http://homepages.compuserve.de/richardkotte/IM002312_.jpg

So what do we see here? A mixed signal at the tune pin of the MAX2623 (This is your question: There is 2V DC AND the noise signal)

Noise (=AC) with ~1V peak-peak and
a DC offset voltage, ~2V.

This weird tuning voltage causes the vco to produce a wide spectrum of frequencies ... to jam gsm :-)
-----------------

Have you got an oscilloscope? Without it building such circuits is almost impossible.

[edited: 2004-08-20, 10:05 PM CET by richy_64]
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