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FDA Morphosis
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thierry38
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Message : #1
RE: FDA Morphosis

xn a écrit :
le filtre passe bas de sortie d'un ampli class-D n'a pour seul but que de supprimer toute information hors bande audio. Hors ton oreille n'entend rien de ce qui se passe au dessus de 20 kHz (au mieux), c'est elle qui sert de filtre passe bas, et les HP sont eux aussi de formidables filtres passe-bas.


Le problème est que la porteuse atteint une amplitude conséquente sans passe-bas.
Rajoutée au signal utile,les excursions,par ex,pour un HP haute fréquence,seront néfastes.(multi-amp+filtrage actif).

Par exemple,une porteuse vers 400KHz sera atténuée de ~40dB (1/100).
le ripple est de 400mVeff.
sans filtre,on peut se retrouver avec 4/5/.../10V de ripple.

Ce message a été modifié le: 29/12/2017 15:38:54 par thierry38.

29/12/2017 15:36:53
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Messages dans ce sujet
FDA Morphosis - jeans - 23/12/2017, 18:12:21
RE: FDA Morphosis - Ragnarsson - 23/12/2017, 18:15:07
RE: FDA Morphosis - Dominique - 23/12/2017, 19:03:11
RE: FDA Morphosis - Ragnarsson - 24/12/2017, 00:34:37
RE: FDA Morphosis - escartefigue33 - 26/12/2017, 17:26:25
RE: FDA Morphosis - xn - 26/12/2017, 18:34:51
RE: FDA Morphosis - rliyung - 26/12/2017, 20:48:09
RE: FDA Morphosis - rliyung - 27/12/2017, 12:00:10
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 09:56:18
RE: FDA Morphosis - xn - 27/12/2017, 12:11:53
RE: FDA Morphosis - rliyung - 27/12/2017, 16:40:32
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 12:51:01
RE: FDA Morphosis - Le Relais Sonore - 27/12/2017, 13:24:25
RE: FDA Morphosis - forr - 27/12/2017, 13:33:46
RE: FDA Morphosis - Audio Pavillon - 27/12/2017, 14:05:12
RE: FDA Morphosis - xn - 27/12/2017, 14:42:23
RE: FDA Morphosis - Audio Pavillon - 27/12/2017, 17:35:55
RE: FDA Morphosis - brunop - 27/12/2017, 16:00:14
RE: FDA Morphosis - Le Relais Sonore - 27/12/2017, 16:29:30
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 17:14:40
RE: FDA Morphosis - forr - 27/12/2017, 19:46:41
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 19:56:47
RE: FDA Morphosis - forr - 27/12/2017, 20:33:17
RE: FDA Morphosis - xn - 27/12/2017, 19:33:59
RE: FDA Morphosis - Audio Pavillon - 27/12/2017, 20:01:26
RE: FDA Morphosis - rliyung - 27/12/2017, 21:53:25
RE: FDA Morphosis - xn - 28/12/2017, 11:31:01
RE: FDA Morphosis - rliyung - 28/12/2017, 22:14:24
RE: FDA Morphosis - revilo - 29/12/2017, 12:34:58
RE: FDA Morphosis - xn - 27/12/2017, 20:14:45
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 13:10:46
RE: FDA Morphosis - xn - 28/12/2017, 15:30:57
RE: FDA Morphosis - Le Relais Sonore - 28/12/2017, 15:57:51
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 16:51:53
RE: FDA Morphosis - xn - 28/12/2017, 17:08:19
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 18:07:28
RE: FDA Morphosis - Le Relais Sonore - 28/12/2017, 19:40:46
RE: FDA Morphosis - xn - 28/12/2017, 18:34:13
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 13:49:52
RE: FDA Morphosis - xn - 29/12/2017, 15:33:22
RE: FDA Morphosis - jsilvestre - 29/12/2017, 18:39:43
RE: FDA Morphosis - thierry38 - 29/12/2017 15:36:53
RE: FDA Morphosis - xn - 29/12/2017, 15:49:36
RE: FDA Morphosis - thierry38 - 29/12/2017, 17:05:49
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 17:48:01
RE: FDA Morphosis - xn - 29/12/2017, 17:59:39
RE: FDA Morphosis - xn - 29/12/2017, 19:10:38
RE: FDA Morphosis - jsilvestre - 29/12/2017, 23:10:07
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 19:32:23
RE: FDA Morphosis - xn - 29/12/2017, 19:48:57
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 20:53:56
RE: FDA Morphosis - xn - 29/12/2017, 21:34:33
RE: FDA Morphosis - jys - 29/12/2017, 22:12:37
RE: FDA Morphosis - xn - 30/12/2017, 12:26:09
RE: FDA Morphosis - jsilvestre - 30/12/2017, 17:57:05
RE: FDA Morphosis - xn - 30/12/2017, 18:50:13
RE: FDA Morphosis - Jean-ClaudeRL - 30/12/2017, 20:18:31
RE: FDA Morphosis - escartefigue33 - 31/12/2017, 09:54:25
RE: FDA Morphosis - Audio Pavillon - 31/12/2017, 16:36:49
RE: FDA Morphosis - narshorn - 31/12/2017, 17:10:48
RE: FDA Morphosis - JM Plantefeve - 31/12/2017, 16:03:58
RE: FDA Morphosis - xn - 02/01/2018, 03:21:55
RE: FDA Morphosis - xn - 31/12/2017, 20:12:24
RE: FDA Morphosis - Audio Pavillon - 31/12/2017, 20:35:58
RE: FDA Morphosis - narshorn - 31/12/2017, 20:46:21
RE: FDA Morphosis - Dominique-Tanguy - 01/01/2018, 09:39:08
RE: FDA Morphosis - Jean-ClaudeRL - 01/01/2018, 10:20:20
RE: FDA Morphosis - narshorn - 01/01/2018, 11:48:11
RE: FDA Morphosis - jeans - 01/01/2018, 11:49:57
RE: FDA Morphosis - Jean-ClaudeRL - 01/01/2018, 11:57:58
RE: FDA Morphosis - escartefigue33 - 01/01/2018, 12:06:50
RE: FDA Morphosis - rliyung - 01/01/2018, 13:15:18
RE: FDA Morphosis - narshorn - 01/01/2018, 19:51:16
RE: FDA Morphosis - narshorn - 01/01/2018, 14:33:45
RE: FDA Morphosis - jys - 01/01/2018, 15:23:11
RE: FDA Morphosis - Grand_Floyd - 01/01/2018, 15:26:52
RE: FDA Morphosis - JM Plantefeve - 01/01/2018, 20:28:24
RE: FDA Morphosis - escartefigue33 - 01/01/2018, 20:36:12
RE: FDA Morphosis - jys - 02/01/2018, 00:33:19
RE: FDA Morphosis - Dominique-Tanguy - 01/01/2018, 20:37:56
RE: FDA Morphosis - JM Plantefeve - 01/01/2018, 20:47:33
RE: FDA Morphosis - Dominique-Tanguy - 02/01/2018, 10:40:35
RE: FDA Morphosis - rliyung - 02/01/2018, 00:56:19
RE: FDA Morphosis - JM Plantefeve - 02/01/2018, 10:10:50
RE: FDA Morphosis - xn - 02/01/2018, 10:41:47
RE: FDA Morphosis - jeans - 02/01/2018, 12:17:38
RE: FDA Morphosis - jys - 03/01/2018, 01:01:15
RE: FDA Morphosis - jeans - 04/01/2018, 12:56:59
RE: FDA Morphosis - jimbee - 05/01/2018, 17:29:26
RE: FDA Morphosis - jeans - 05/01/2018, 17:52:54
RE: FDA Morphosis - xn - 05/01/2018, 20:19:47
RE: FDA Morphosis - jys - 06/01/2018, 02:17:21
RE: FDA Morphosis - narshorn - 06/01/2018, 09:25:20
RE: FDA Morphosis - jeans - 06/01/2018, 12:18:23
RE: FDA Morphosis - narshorn - 07/01/2018, 15:23:06
RE: FDA Morphosis - jimbee - 06/01/2018, 10:09:29
RE: FDA Morphosis - jeans - 07/01/2018, 17:15:53
RE: FDA Morphosis - jeans - 10/01/2018, 18:50:57
RE: FDA Morphosis - JM Plantefeve - 10/01/2018, 21:04:10
RE: FDA Morphosis - jeans - 10/01/2018, 21:57:44
RE: FDA Morphosis - jeans - 10/01/2018, 23:29:47
RE: FDA Morphosis - rliyung - 11/01/2018, 11:53:23
RE: FDA Morphosis - jimbee - 11/01/2018, 14:02:30
RE: FDA Morphosis - jeans - 11/01/2018, 15:50:02
RE: FDA Morphosis - jimbee - 11/01/2018, 19:33:34
RE: FDA Morphosis - xn - 11/01/2018, 08:07:21
RE: FDA Morphosis - escartefigue33 - 11/01/2018, 09:15:31
RE: FDA Morphosis - jeans - 11/01/2018, 12:59:23
RE: FDA Morphosis - xn - 11/01/2018, 21:46:11
RE: FDA Morphosis - jimbee - 12/01/2018, 17:48:09
RE: FDA Morphosis - thierry38 - 13/01/2018, 16:57:59
RE: FDA Morphosis - jeans - 13/02/2018, 15:28:50
RE: FDA Morphosis - jm88 - 14/02/2018, 13:36:39
RE: FDA Morphosis - jeans - 14/02/2018, 16:14:36
RE: FDA Morphosis - jm88 - 15/02/2018, 13:27:25
RE: FDA Morphosis - jeans - 16/02/2018, 19:01:25
RE: FDA Morphosis - narshorn - 16/02/2018, 19:16:39
RE: FDA Morphosis - calivin - 16/02/2018, 19:40:10
RE: FDA Morphosis - jm88 - 16/02/2018, 20:24:09
RE: FDA Morphosis - folkdeath95 - 17/02/2018, 13:12:37
RE: FDA Morphosis - narshorn - 17/02/2018, 11:52:25
RE: FDA Morphosis - thierry38 - 17/02/2018, 13:06:31
RE: FDA Morphosis - jm88 - 17/02/2018, 13:48:36
RE: FDA Morphosis - thierry38 - 17/02/2018, 15:24:57
RE: FDA Morphosis - jm88 - 18/02/2018, 09:43:48
RE: FDA Morphosis - forr - 18/02/2018, 13:35:26
RE: FDA Morphosis - jm88 - 18/02/2018, 17:43:59
RE: FDA Morphosis - forr - 18/02/2018, 18:39:32
RE: FDA Morphosis - jm88 - 18/02/2018, 22:13:59
RE: FDA Morphosis - forr - 19/02/2018, 01:48:05
RE: FDA Morphosis - jm88 - 19/02/2018, 09:53:24
RE: FDA Morphosis - rliyung - 18/02/2018, 09:55:14
RE: FDA Morphosis - Dominique-Tanguy - 18/02/2018, 10:10:26
RE: FDA Morphosis - jm88 - 18/02/2018, 13:28:06
RE: FDA Morphosis - Dominique-Tanguy - 18/02/2018, 14:20:27
RE: FDA Morphosis - folkdeath95 - 18/02/2018, 15:46:59
RE: FDA Morphosis - forr - 18/02/2018, 17:32:01
RE: FDA Morphosis - jm88 - 18/02/2018, 17:40:31
RE: FDA Morphosis - forr - 18/02/2018, 18:52:02
RE: FDA Morphosis - jm88 - 18/02/2018, 22:16:59
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 09:44:10
RE: FDA Morphosis - jm88 - 19/02/2018, 09:55:55
RE: FDA Morphosis - forr - 19/02/2018, 12:54:34
RE: FDA Morphosis - jm88 - 19/02/2018, 10:07:52
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 17:50:39
RE: FDA Morphosis - narshorn - 18/02/2018, 18:03:41
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 18:54:30
RE: FDA Morphosis - jys - 18/02/2018, 18:17:32
RE: FDA Morphosis - JM Plantefeve - 18/02/2018, 20:53:59
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 21:58:21
RE: FDA Morphosis - xn - 18/02/2018, 22:34:45
RE: FDA Morphosis - jm88 - 19/02/2018, 09:33:01
RE: FDA Morphosis - jys - 19/02/2018, 01:02:37
RE: FDA Morphosis - Audio Pavillon - 19/02/2018, 11:20:18
RE: FDA Morphosis - jm88 - 19/02/2018, 20:55:28
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 12:55:34
RE: FDA Morphosis - Audio Pavillon - 19/02/2018, 15:04:54
RE: FDA Morphosis - escartefigue33 - 19/02/2018, 16:04:23
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 17:08:42
RE: FDA Morphosis - JM Plantefeve - 19/02/2018, 21:08:30
RE: FDA Morphosis - escartefigue33 - 19/02/2018, 21:27:41
RE: FDA Morphosis - narshorn - 19/02/2018, 23:01:48
RE: FDA Morphosis - jeans - 24/02/2018, 22:19:35
RE: FDA Morphosis - jimbee - 09/04/2018, 17:30:14
RE: FDA Morphosis - narshorn - 09/04/2018, 18:49:20
RE: FDA Morphosis - Jerome775 - 28/09/2018, 17:26:46
RE: FDA Morphosis - jmg - 28/09/2018, 20:11:46
RE: FDA Morphosis - Jerome775 - 29/09/2018, 17:49:42
RE: FDA Morphosis - JM Plantefeve - 10/12/2018, 20:48:29
RE: FDA Morphosis - jeans - 11/12/2018, 13:07:48
RE: FDA Morphosis - calivin - 11/12/2018, 13:44:36

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