Need help to know a VCO operation

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harry_sldn

Joined: 07 Mar 2006
Posts: 44
Helped: 2

31 Oct 2009 14:12 Need help to know a VCO operation

Dear friends,

Anyone can help me on this VCO's operation?
how does it work? (the amplifing root and feedback?)

what is the J1 element and if its a jack port what does the 10dbm mean?

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FvM

Joined: 22 Jan 2008
Posts: 5161
Helped: 767
Location: Bochum, Germany

31 Oct 2009 14:27 Re: Need help to know a VCO operation

Quote:

what is the J1 element and if its a jack port what does the 10dbm mean?

1. Yes
2. It means 10 mW or 0.7V RMS (with 50 ohm matching), consult a RF engineering text book - or wikipedia http://en.wikipedia.org/wiki/DBm

Generally it's a Clapp oscillator, the said sources can give you also more information on this topic.