Timeline for Designing bandpass filter for audio amplifier
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 24, 2022 at 10:31 | comment | added | M.K. Saunders | thanks for the reminder. I didn't know I was suppose to do that. | |
| Jun 24, 2022 at 10:19 | vote | accept | M.K. Saunders | ||
| Jun 24, 2022 at 10:19 | vote | accept | M.K. Saunders | ||
| Jun 24, 2022 at 10:19 | |||||
| Jun 24, 2022 at 10:19 | vote | accept | M.K. Saunders | ||
| Jun 24, 2022 at 10:19 | |||||
| Jun 15, 2022 at 14:59 | comment | added | M.K. Saunders | The receive coil is wound counter-clockwise on the top part and the clockwise on the bottom part to minimize the "feed-through" voltage induced by the magnetic field. However, since it's not perfect, I still get some voltage even without any metal (and consequently, some inductance). It's a clever method where the presence of metal will be detected via the presence of the third harmonic generated by the metal. This is why there shouldn't be any higher harmonics in the absence of any metal. In any case, thanks for dropping by! much appreciated. | |
| Jun 15, 2022 at 14:52 | comment | added | Andy aka | By the sound of it you are using two receive coil in an inductive balance configuration maybe? | |
| Jun 15, 2022 at 14:50 | history | edited | Andy aka | CC BY-SA 4.0 |
added 266 characters in body
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| Jun 15, 2022 at 14:48 | comment | added | M.K. Saunders | "I have designed two commercial metal detectors." Ha, I couldn't ask for a better person to answer this question. Yeah, I will try your solution. Thanks a bunch! | |
| Jun 15, 2022 at 14:39 | history | answered | Andy aka | CC BY-SA 4.0 |