> Message: 2 > Date: Mon, 31 Mar 2008 21:20:43 +0000 > From: Jenny Lee <[EMAIL PROTECTED]> > Subject: [time-nuts] Xtal-like Colpitts Oscillator > To: <time-nuts@febo.com> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="iso-8859-1" > > > Hi Everyone, I was hoping to get some words of wisdom on my > oscillator that only oscillates in simulation! I have .....
Are you sure it simulates? Transistor looks reverse biased, some odd looking values, Cout too small, 10nF more probable, L2 too large, a real component is probably well past self resonance at 34MHz, C7 too large. The direct drive into a 50 ohm load may be ambitious, I'd have expected a buffer amp on the oscillator output giving a higher load Z to your osc. Check the DC bias without a resonator, check the system as a buffer without the resonator or C1 fitted etc. Hope this helps. David _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
