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Simulator-programi i modeli...
#49
Osnovni parametri izlaznog pojačala - simulacija TinaTI




Radičemo na shemi Motorola Abarth ver 1.3

Shema



TinaTI file


.tsc   Motorola AN485 ARITON 4R0 Abarth-Hybrid 1-3 input.TSC (Size: 2,8 MB / Downloads: 13)

Naložimo file,
Otvorimo file u TinaTI:

-Menu/Help/Check for updates
 ovdje dali SW nadje neku novu komponentu ili ne! ...pustimo update, ako se nešto novo nadje!

-Menu/Tools
-Re-read symbol database
-Re- compile library
-Re -build library

Ovo gore je osnova i radimo je svaki put kad dobijemo *.TSC shematic, ili sa TI web neki Reference design...
Tu su inače sakriveni macroi podosta popracenih elemenata, i tako jih dobivamo u svoj macro-lib.
....ako jih slucajno kasnije ne nadjemo, najbolje je otvoriti taj file (referent design xxx ili odredjeni *.TSC shematic)
i copy/paste tog elementa u naš aktivni shematic.


1.
Proverimo dali smo sve fino povezali u shematiku,
Menu / Analysis / ERC
Provera dali možda koji pin ili veza "lebdi", ako je tako, SW nas opozorava ovako:



kliknemo na liniju errora i u shematiku se nama ta greška "odeblja"!
Popravimo, povežemo...
Naravno -    Re-check
OK

2.
Kod pojačala nas zanimaju u startu:

-ulazni sig.gen neka je na 0,0mV amplitude, 0,0mV DC offseta.
možemo naravno taj ulazni "voltage sourse- sig.gen" i izbaciti i umesto njega postaviti kratkospojnik - jumper.

Iz Menu/T&M odaberemo multimetar i pogledamo:



Ulaz nam je kratkospojen, izlaz nam je na odredjenom nivou DC i multimetar nam postavlja tu vrednost na display

-ako imamo u shematiku trimmpot za Offset, onda sa njim naštelamo izlazni offset na 0,0mVDC
-ako imamo DC servo, možemo pogledati koliki je DC offset bez servo dejstva,
upišemo u servo injektor otpornik vrednost koja više nema upliva na DC servo, 1-10M ohma
i on-line dobijamo izlaznu vrednost bez servo dejstva.

3.
Multimetrom i ADC "pipalicom" pogledajmo još koliko su nam naši izlazi biasirani "mirnom strujom":



pipalicom multimetra kliknemo na otpornik R17 ili R18, i dobivamo vrednost mirne struje,
u ovom primeru dviju izlaznih parova @ cca75mADC
to jest mirnu struju oko 150mADC kroz jedan od tih "emitterskih otpornika",
tu imamo CFP izlaz  :-)

Ako nemamo željeni Bias izlaznih, štelamo ga sa trimmpotom P1 500R,
klikajuči na njega i odabirom Setting (%) na odgovarajuči nivo.
(to može potrajati pokušavanjem odgovarajučeg nivoa više puta - "Trial and error" metodom)
Ako se ne dobija željenu mirnu struju i na POT Settings 100% (...ili 0% zavisi kako je pot okrenjen)
onda u shematik stavljamo vrednost R13 višu (sada 750R, stavljamo 820R ili višu ...)
Nastavljamo tih 150mADC mirne struje!!!

-ćekiramo još jednom izlazni Offset ... 0,0mV!
-DC servo upišemo u servo injektor otpornik odgovarjajuču vrednost (po shemi)


Sad možemo na analizu pojačala.

Zanima nas AC pojačanje, AC BandWidth (BW) i kako se nam ponaša Phasa u audio području.



4.
Menu/AC Analysis/AC Transfer Characteristic

-u start freq stavljamo recimo 1HZ ili ako nas baš zanima kako se pojačalo odaziva u sub niskim freq, stavljamo 0,1 ili 0,01HZ
-u end freq stavljamo 1MHz, (2-5-10MHz) po želji da vidimo i odziv sklopa na extr.višim freq
-number of points 100 (zadovoljava, možemo naravno i večim nivoem, ali i CPU čemo više zaposliti - nepotrebno , ...tu netreba višu preciznost!)
-skala neka je LOG (sweep type), taku smo naučili po raznim DS...
-tražimo Amplitudu&Phasu --- OK

Pokaže se nam novi prozorčič, možemo ga po potrebi i povečati...
Amplituda:

Klikom na gornju "ravnu liniju pojačanja" dobijemo dole levo u task liniji podatak, da je to pojačanje +27,63dB

Kod BW nas zanima kako se ponaša na marginama audio freq područja:

-pogledačemo si BW sa padom pojačanja od (-1dB):



U menuju AC Bode nadjemo kursore "a" i "b",
odaberemo "a" i kliknemo tamo kod 10Hz na našu krivu, i u prozorče ukucamo tih (-1dB) to jest sada +26,63dB
Dobijemo rezultat : 1,38Hz

odaberemo u menuju kursor "b", kliknemo na našu krivu oko 100-200KHz, i ukucamo u prozorče takodjer +26,63dB
Dobijemo rezultat: 237KHz

----------------------------------------
5.
Phase:

slično gornjemu postupku, ali nas sada zanima kakvo je odstupanje phase @20HZ i na @20KHz
U prozorčeta odabranih kurzora stavljamo te limite audio područja.

Rezultati:
@20Hz         +2,09°
@20KHz        -2,7°

End Part1
LP
Dragan
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Messages In This Thread
RE: Simulator-programi i modeli... - by TDA - 08-11-2014, 06:31 PM
RE: Simulator-programi i modeli... - by mikikg - 08-11-2014, 07:32 PM
RE: Simulator-programi i modeli... - by TDA - 08-11-2014, 07:54 PM
RE: Simulator-programi i modeli... - by mikikg - 08-11-2014, 09:04 PM
RE: Simulator-programi i modeli... - by samuki - 08-11-2014, 10:37 PM
RE: Simulator-programi i modeli... - by samuki - 08-12-2014, 11:08 PM
RE: Simulator-programi i modeli... - by Dragan100 - 08-11-2014, 10:37 PM
RE: Simulator-programi i modeli... - by TDA - 08-11-2014, 11:00 PM
RE: Simulator-programi i modeli... - by Dragan100 - 08-11-2014, 11:16 PM
RE: Simulator-programi i modeli... - by Braca - 08-12-2014, 09:36 AM
RE: Simulator-programi i modeli... - by Dragan100 - 08-12-2014, 12:23 PM
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RE: Simulator-programi i modeli... - by Braca - 08-12-2014, 01:39 PM
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RE: Simulator-programi i modeli... - by Braca - 12-08-2014, 07:53 PM
RE: Simulator-programi i modeli... - by Braca - 12-21-2014, 09:27 PM
RE: Simulator-programi i modeli... - by TDA - 12-21-2014, 10:10 PM
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RE: Simulator-programi i modeli... - by samuki - 12-21-2014, 11:05 PM
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RE: Simulator-programi i modeli... - by Aca93 - 12-21-2014, 11:06 PM
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RE: Simulator-programi i modeli... - by Dragan100 - 12-23-2014, 10:10 AM
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RE: Simulator-programi i modeli... - by Dragan100 - 12-23-2014, 10:15 AM
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RE: Simulator-programi i modeli... - by Dragan100 - 12-24-2014, 09:01 AM
RE: Simulator-programi i modeli... - by Dragan100 - 03-04-2016, 04:53 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-05-2016, 10:57 PM
RE: Simulator-programi i modeli... - by vulejov - 03-06-2016, 08:46 AM
RE: Simulator-programi i modeli... - by vulejov - 03-06-2016, 04:30 PM
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RE: Simulator-programi i modeli... - by Dragan100 - 03-06-2016, 06:52 PM
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RE: Simulator-programi i modeli... - by Dragan100 - 03-06-2016, 10:24 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-08-2016, 05:11 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-08-2016, 06:39 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-11-2016, 03:35 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-11-2016, 04:00 PM
RE: Simulator-programi i modeli... - by vulejov - 03-23-2016, 08:16 PM
RE: Simulator-programi i modeli... - by Dragan100 - 03-23-2016, 08:48 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-09-2016, 12:26 PM
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RE: Simulator-programi i modeli... - by vulejov - 04-09-2016, 08:12 PM
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RE: Simulator-programi i modeli... - by Braca - 04-09-2016, 11:26 PM
RE: Simulator-programi i modeli... - by vulejov - 04-10-2016, 09:04 AM
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RE: Simulator-programi i modeli... - by Dragan100 - 04-09-2016, 09:56 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-09-2016, 09:24 PM
RE: Simulator-programi i modeli... - by vulejov - 04-09-2016, 09:29 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-10-2016, 12:53 PM
RE: Simulator-programi i modeli... - by vulejov - 04-10-2016, 01:15 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-10-2016, 06:37 PM
RE: Simulator-programi i modeli... - by vulejov - 04-10-2016, 08:48 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-10-2016, 10:58 PM
RE: Simulator-programi i modeli... - by vulejov - 04-11-2016, 05:27 AM
RE: Simulator-programi i modeli... - by Dragan100 - 04-11-2016, 11:28 AM
RE: Simulator-programi i modeli... - by vulejov - 04-11-2016, 02:52 PM
RE: Simulator-programi i modeli... - by Dragan100 - 04-11-2016, 06:47 PM
RE: Simulator-programi i modeli... - by vulejov - 04-11-2016, 09:02 PM
RE: Simulator-programi i modeli... - by Braca - 04-12-2016, 09:17 PM
RE: Simulator-programi i modeli... - by vulejov - 04-13-2016, 07:17 AM
RE: Simulator-programi i modeli... - by mikikg - 04-13-2016, 08:35 AM
RE: Simulator-programi i modeli... - by mikikg - 04-15-2016, 10:29 PM
RE: Simulator-programi i modeli... - by Robert63 - 04-15-2016, 10:52 PM
RE: Simulator-programi i modeli... - by Leonardo - 11-24-2016, 08:43 AM
RE: Simulator-programi i modeli... - by vsavic - 01-02-2017, 12:48 AM
RE: Simulator-programi i modeli... - by Braca - 08-02-2019, 10:58 PM
RE: Simulator-programi i modeli... - by Braca - 08-03-2019, 11:45 AM
RE: Simulator-programi i modeli... - by Dragan100 - 08-03-2019, 12:12 PM
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RE: Simulator-programi i modeli... - by Braca - 01-20-2020, 09:24 AM
Simulator-programi i modeli... - by mikikg - 05-31-2013, 06:09 AM
Simulator-programi i modeli... - by mikikg - 05-31-2013, 09:13 AM

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