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Discrete AMP-Speaker Protection
#27
SImulacija THDja Back-to Back mosfet Speaker Protekcije

1. Simulacija klasične sheme LM3886 bez nikakve protekcije na izlazu,
-opterečenje je 8R0, GAIN = 24V/V ili 27,60dB
-izlazna amplituda je 10,00Vpeak@1KHz, DC offset podešen

THD@8R0 @1KHZ @10,00Vpeak OUT @Dcoffset +20uV = 8,643E-04%

[Image: attachment.php?aid=28444]

2. THD sa uključenom protekcijom Back-to-Back mosfeta,
-opterečenje je 8R0, GAIN = 24V/V ili 27,60dB
-izlazna amplituda je 10,00Vpeak@1KHz, DCoffset podešen

THD@8R0 @1KHZ @10,00Vpeak OUT @Dcoffset +20uV = 9,565E-04%

[Image: attachment.php?aid=28445]


3. THD sa uključenom protekcijom Back-to-Back mosfeta, dodana je Remote Sense Back-to Back mosfeta
sada je potrebno malo korigirati izlaznu amplitudu pošto se nam je Gain malo smanjio, za 0,33dB ili smanjio se zbog RemoteSense za -1,2%
sada je GAIN = 23,09V/V ili 27,27dB,
-izlaz ponovo postavljen na 10,00Vpeak@1KHz, DC podešen!
-opterečenje je 8R0

THD@8R0 @1KHZ @10,00Vpeak OUT @Dcoffset +20uV = 8,655E-04%

[Image: attachment.php?aid=28446]


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LP
Dragan
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Messages In This Thread
Discrete AMP-Speaker Protection - by Dragan100 - 07-12-2018, 01:17 PM
RE: Discrete AMP-Speaker Protection - by TDA - 07-12-2018, 02:29 PM
RE: Discrete AMP-Speaker Protection - by DaveFred - 05-15-2021, 05:16 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 07-12-2018, 08:08 PM
RE: Discrete AMP-Speaker Protection - by progster - 07-12-2018, 08:36 PM
RE: Discrete AMP-Speaker Protection - by PeceMK - 07-16-2018, 08:02 AM
RE: Discrete AMP-Speaker Protection - by TDA - 07-18-2018, 07:56 AM
RE: Discrete AMP-Speaker Protection - by Dragan100 - 01-20-2019, 08:15 PM
RE: Discrete AMP-Speaker Protection - by Braca - 05-07-2020, 12:41 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 08-03-2020, 04:39 PM
RE: Discrete AMP-Speaker Protection - by Bocko - 08-03-2020, 07:44 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 08-05-2020, 10:39 AM
RE: Discrete AMP-Speaker Protection - by me[R]a - 08-05-2020, 02:43 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 08-06-2020, 01:18 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 08-06-2020, 02:39 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 05-19-2021, 12:32 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 05-19-2021, 03:33 PM
RE: Discrete AMP-Speaker Protection - by Bocko - 05-19-2021, 04:10 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 05-19-2021, 04:48 PM
RE: Discrete AMP-Speaker Protection - by gimba - 05-19-2021, 05:26 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 05-19-2021, 09:26 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 06-08-2021, 02:11 PM
RE: Discrete AMP-Speaker Protection - by ronovar - 06-08-2021, 06:15 PM
RE: Discrete AMP-Speaker Protection - by gimba - 02-08-2024, 07:34 AM

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