| To: | Amps@contesting.com |
|---|---|
| Subject: | Re: [Amps] SB-220 |
| From: | Dennis12Amplify@aol.com |
| Date: | Wed, 3 Nov 2004 21:29:50 EST |
| List-post: | <mailto:amps@contesting.com> |
In a message dated 11/3/04 3:14:14 PM Central Standard Time, r@somis.org writes: The mechanism that allows a parasitic oscillation in a pair of 3-500Zs is the 0.3pF of C between the anodes and the cathodes. 0.3pF seems pretty trivial until one discovers that it amounts to a feedback path of c. -j5000-ohms between the output and the input. >At what frequency? >It would have to be over 100MHZ to be that low of a number! >Dennis O. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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