In Reply to: Feedback, no feedback and selective feedback posted by 6AS7_6SN7 on October 5, 2010 at 00:35:34:
Luca, Can you tell us more? For example, exactly where do you put the feedback loop in one of your circlotron designs? Are there decent equations for calculating the values of R and C, such that a non-EE could do it? What output impedance do you shoot for and how do you shoot for it (vs some other lower or higher value)? I am receptive to trying a touch of NFB to bring the output Z down into the range of 1 ohm or below, and I have no problem about your idea of making it frequency-dependent. Thanks.
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Follow Ups
- RE: Feedback, no feedback and selective feedback - Lew 15:08:35 10/10/10 (17)
- A possible selective feedback for circlotron - 6AS7_6SN7 01:49:57 10/12/10 (13)
- RE: A tricky issue - Ralph 10:25:11 10/12/10 (10)
- RE: A tricky issue - Lew 22:48:33 10/12/10 (9)
- It is not a tricky issue at all - 6AS7_6SN7 01:14:20 10/13/10 (8)
- RE: It is not a tricky issue at all - Lew 07:03:14 10/13/10 (7)
- You are absolutely right! - 6AS7_6SN7 00:44:26 10/14/10 (6)
- RE: You are absolutely right! - Ralph 11:05:49 10/20/10 (3)
- RE: You are absolutely right! - Banat 05:28:04 10/21/10 (1)
- In this particular case I have found that.... - 6AS7_6SN7 11:35:59 11/28/10 (0)
- We made all the points quite clear....... - 6AS7_6SN7 23:56:08 10/20/10 (0)
- RE: You are absolutely right! - Lew 19:51:52 10/14/10 (0)
- RE: You are absolutely right! - Banat 10:10:48 10/14/10 (0)
- RE: A possible selective feedback for circlotron - Banat 09:03:49 10/12/10 (1)
- I know there is always room for improvement... - 6AS7_6SN7 09:38:21 10/12/10 (0)
- RE: Feedback, no feedback and selective feedback - 6AS7_6SN7 23:18:33 10/10/10 (2)
- RE: Feedback, no feedback and selective feedback - Lew 08:37:37 10/12/10 (1)
- For sake of clarity - 6AS7_6SN7 10:03:27 10/12/10 (0)